Ubuntu update for linux-hwe-5.15



Published: 2022-09-21
Risk Medium
Patch available YES
Number of vulnerabilities 21
CVE-ID CVE-2021-33061
CVE-2021-33655
CVE-2022-1012
CVE-2022-1729
CVE-2022-1852
CVE-2022-1943
CVE-2022-1973
CVE-2022-2318
CVE-2022-2503
CVE-2022-26365
CVE-2022-2873
CVE-2022-2959
CVE-2022-32296
CVE-2022-33740
CVE-2022-33741
CVE-2022-33742
CVE-2022-33743
CVE-2022-33744
CVE-2022-34494
CVE-2022-34495
CVE-2022-36946
CWE-ID CWE-20
CWE-787
CWE-401
CWE-362
CWE-476
CWE-416
CWE-264
CWE-200
CWE-125
CWE-330
CWE-399
CWE-415
Exploitation vector Network
Public exploit Public exploit code for vulnerability #21 is available.
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

linux-image-generic-64k-hwe-20.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-48-generic-64k (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-48-generic-lpae (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-generic-hwe-20.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-lowlatency-hwe-20.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-48-generic (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-virtual-hwe-20.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-48-lowlatency (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 21 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU60490

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33061

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient control flow management. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds write

EUVDB-ID: #VU65833

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33655

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in FBIOPUT_VSCREENINFO IOCTL. A local user can trigger an out-of-bounds write error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Memory leak

EUVDB-ID: #VU64079

Risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1012

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient randomization in the net/ipv4/tcp.c when calculating port offsets in Linux kernel cause by small table perturb size. A remote attacker can cause memory leak and gain access to sensitive information.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Race condition

EUVDB-ID: #VU64156

Risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1729

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within sys_perf_event_open() in Linux kernel. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) NULL pointer dereference

EUVDB-ID: #VU64262

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1852

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel’s KVM module. A local user can perform a denial of service (DoS) attack in the x86_emulate_insn in arch/x86/kvm/emulate.c.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Out-of-bounds write

EUVDB-ID: #VU66806

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1943

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the udf_write_fi() function within the UDF file system functionality. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Use-after-free

EUVDB-ID: #VU65641

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1973

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to a use-after-free error within the NTFS file system implementation in the Linux kernel. A local user can trigger a use-after-free error and crash the system or gain access to sensitive information.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Use-after-free

EUVDB-ID: #VU65318

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2318

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to a use-after-free error caused by timer handler in net/rose/rose_timer.c of linux. A local user can exploit the vulnerability to perform a denial of service attack.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU66810

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2503

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the way dm-verity is used to restrict module/firmware loads to trusted root filesystem in LoadPin builds. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Information disclosure

EUVDB-ID: #VU65345

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26365

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

11) Out-of-bounds read

EUVDB-ID: #VU66807

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2873

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to crash the kernel.

The vulnerability exists due to a boundary condition within the Intel iSMT SMBus host controller driver. A local user can send specially crafted data to the I2C_SMBUS IOCTL, trigger an out-of-bounds read error and crash the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

12) Race condition

EUVDB-ID: #VU66934

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2959

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a missing lock in the pipe_resize_ring() function within the watch queue when performing operations on an object. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

13) Use of insufficiently random values

EUVDB-ID: #VU64943

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32296

CWE-ID: CWE-330 - Use of Insufficiently Random Values

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to Linux kernel allowing TCP servers to identify clients by observing what source ports are used. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

14) Information disclosure

EUVDB-ID: #VU65346

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33740

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

15) Information disclosure

EUVDB-ID: #VU65351

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33741

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

16) Information disclosure

EUVDB-ID: #VU65348

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33742

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

17) Resource management error

EUVDB-ID: #VU65841

Risk: Low

CVSSv3.1: 2.4 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33743

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a malicious network backend to perform a denial of service (DoS) attack.

The vulnerability exists due to an error in eXpress Data Path support implementation in Xen, allowing Linux netfront to use freed SKBs. A malicious network backend can cause denial of service on the guest OS.


Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

18) Resource management error

EUVDB-ID: #VU65844

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33744

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of foreign mappings performed by rbtree when mapping pages of Arm guests. An unprivileged Arm guest can cause inconsistencies of the rbtree via PV devices, which can lead to denial of service of dom0 and cause crashes or the inability to perform further mappings of other guests' memory pages.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

19) Double Free

EUVDB-ID: #VU65297

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-34494

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the rpmsg_virtio_add_ctrl_dev() function in drivers/rpmsg/virtio_rpmsg_bus.c in the Linux kernel remote processor messaging (rpmsg) framework. A local user can run a specially crafted program to trigger a double free error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

20) Double Free

EUVDB-ID: #VU65643

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-34495

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the rpmsg_probe() function in drivers/rpmsg/virtio_rpmsg_bus.c in Linux kernel. A local user can trigger a double free error in the virtio RPMSG bus driver and crash the system.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

21) Input validation error

EUVDB-ID: #VU66476

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-36946

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the nfqnl_mangle() function in net/netfilter/nfnetlink_queue.c in the Linux kernel when processing IPv6 packets. A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-hwe-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-generic-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-lowlatency-64k (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-5.15.0-48-generic-lpae (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.16

linux-image-5.15.0-48-generic (Ubuntu package): before 5.15.0-48.54~20.04.1

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.48.54~20.04.18

linux-image-5.15.0-48-lowlatency (Ubuntu package): before 5.15.0-48.54~20.04.1

External links

http://ubuntu.com/security/notices/USN-5623-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



###SIDEBAR###