Ubuntu update for linux-gke



Published: 2023-03-29 | Updated: 2023-03-30
Risk Medium
Patch available YES
Number of vulnerabilities 15
CVE-ID CVE-2022-2196
CVE-2022-3424
CVE-2022-36280
CVE-2022-41218
CVE-2022-4382
CVE-2022-48423
CVE-2022-48424
CVE-2023-0045
CVE-2023-0210
CVE-2023-0266
CVE-2023-23454
CVE-2023-23455
CVE-2023-23559
CVE-2023-26606
CVE-2023-28328
CWE-ID CWE-665
CWE-416
CWE-787
CWE-119
CWE-254
CWE-122
CWE-843
CWE-190
CWE-476
Exploitation vector Network
Public exploit Public exploit code for vulnerability #4 is available.
Public exploit code for vulnerability #8 is available.
Vulnerability #10 is being exploited in the wild.
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

linux-image-5.15.0-1029-gke (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-gke-5.15 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-kvm (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-1030-gke (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-gke (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-1030-kvm (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-1027-ibm (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-ibm (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 15 vulnerabilities.

1) Improper Initialization

EUVDB-ID: #VU74019

Risk: Low

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

CVE-ID: CVE-2022-2196

CWE-ID: CWE-665 - Improper Initialization

Exploit availability: No

Description

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

The vulnerability exists due to improper initialization within nVMX in Linux kernel. A local user can perform speculative execution attacks and escalate privileges on the system.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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) Use-after-free

EUVDB-ID: #VU69759

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-2022-3424

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the gru_set_context_option(), gru_fault() and gru_handle_user_call_os() functions in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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) Out-of-bounds write

EUVDB-ID: #VU71480

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-2022-36280

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

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 vmw_kms_cursor_snoo() function in drivers/gpu/vmxgfx/vmxgfx_kms.c in vmwgfx VMWare driver. A local user can trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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.

4) Use-after-free

EUVDB-ID: #VU67657

Risk: Low

CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-41218

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error within the dvb_demux_open() and dvb_dmxdev_release() function in drivers/media/dvb-core/dmxdev.c in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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. However, proof of concept for this vulnerability is available.

5) Use-after-free

EUVDB-ID: #VU72328

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4382

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows an attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the gadgetfs Linux driver. An attacker with physical access to the system can trigger a use-after-free by manipulating the external device with gadgetfs and execute arbitrary code.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

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: #VU74154

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-2022-48423

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 within fs/ntfs3/record.c in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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) Buffer overflow

EUVDB-ID: #VU74155

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-2022-48424

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within fs/ntfs3/inode.c in Linux kernel. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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) Security features bypass

EUVDB-ID: #VU72469

Risk: Low

CVSSv3.1: 2.6 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-0045

CWE-ID: CWE-254 - Security Features

Exploit availability: Yes

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to Linux kernel does not correctly mitigate SMT attacks. A local user can bypass Spectre-BTI user space mitigations and gain access to sensitive information.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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. However, proof of concept for this vulnerability is available.

9) Heap-based buffer overflow

EUVDB-ID: #VU71095

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0210

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the ksmbd_decode_ntlmssp_auth_blob() function in ksmbd when handling NTLMv2 authentication. A remote attacker can send specially crafted data to ksmbd, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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.

10) Use-after-free

EUVDB-ID: #VU71482

Risk: High

CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-0266

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the snd_ctl_elem_read() function in the Linux kernel sound subsystem. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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?

Yes. This vulnerability is being exploited in the wild.

11) Type Confusion

EUVDB-ID: #VU71478

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-2023-23454

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

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

The vulnerability exists due to a type confusion error within the cbq_classify() function in net/sched/sch_cbq.c in the Linux kernel. A local user can trigger a type confusion error and crash the kernel.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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) Type Confusion

EUVDB-ID: #VU71477

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-2023-23455

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

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

The vulnerability exists due to a type confusion error within the atm_tc_enqueue() function in net/sched/sch_atm.c in the Linux kernel. A local user can trigger a type confusion error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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) Integer overflow

EUVDB-ID: #VU72468

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-23559

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow within the rndis_query_oid() function in drivers/net/wireless/rndis_wlan.c. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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) Use-after-free

EUVDB-ID: #VU74156

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-2023-26606

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the ntfs_trim_fs() function in fs/ntfs3/bitmap.c in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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) NULL pointer dereference

EUVDB-ID: #VU74126

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-2023-28328

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 within the az6027 driver in drivers/media/usb/dev-usb/az6027.c in the Linux Kernel. A local user can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-gke to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-5.15.0-1029-gke (Ubuntu package): before 5.15.0-1029.34~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1030.29

linux-image-kvm (Ubuntu package): before 5.15.0.1030.26

linux-image-5.15.0-1030-gke (Ubuntu package): before 5.15.0-1030.35

linux-image-gke (Ubuntu package): before 5.15.0.1030.29

linux-image-5.15.0-1030-kvm (Ubuntu package): before 5.15.0-1030.35

linux-image-5.15.0-1027-ibm (Ubuntu package): before 5.15.0-1027.30

linux-image-ibm (Ubuntu package): before 5.15.0.1027.23

External links

http://ubuntu.com/security/notices/USN-5987-1


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.



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