Ubuntu update for linux



Published: 2022-07-02
Risk Medium
Patch available YES
Number of vulnerabilities 8
CVE-ID CVE-2021-4197
CVE-2021-4202
CVE-2022-1353
CVE-2022-1419
CVE-2022-1652
CVE-2022-1679
CVE-2022-1734
CVE-2022-28356
CWE-ID CWE-264
CWE-416
CWE-200
CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Ubuntu
Operating systems & Components / Operating system

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

linux-image-4.4.0-1145-aws (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.4.0-229-generic (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.4.0-229-lowlatency (Ubuntu package)
Operating systems & Components / Operating system package or component

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

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

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

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Security restrictions bypass

EUVDB-ID: #VU61258

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-2021-4197

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 missing permissions checks within the cgroups (control groups) functionality of Linux Kernel when writing into a file descriptor. A local low privileged process can trick a higher privileged parent process into writing arbitrary data into files, which can result in denial of service or privileges escalation.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04

linux-image-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-1145-aws (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-generic (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-aws (Ubuntu package): before 4.4.0.229.235

linux-image-generic (Ubuntu package): before 4.4.0.229.235

linux-image-virtual (Ubuntu package): before 4.4.0.229.235

External links

http://ubuntu.com/security/notices/USN-5500-1


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: #VU63764

Risk: Low

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

CVE-ID: CVE-2021-4202

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 in the nci_request() function in net/nfc/nci/core.c in NFC Controller Interface (NCI) in the Linux kernel. A local user can cause a data race problem while the device is getting removed and escalate privileges on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04

linux-image-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-1145-aws (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-generic (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-aws (Ubuntu package): before 4.4.0.229.235

linux-image-generic (Ubuntu package): before 4.4.0.229.235

linux-image-virtual (Ubuntu package): before 4.4.0.229.235

External links

http://ubuntu.com/security/notices/USN-5500-1


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.

3) Information disclosure

EUVDB-ID: #VU63388

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1353

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 excessive data output by the application in the pfkey_register function in net/key/af_key.c in the Linux kernel. A local user can gain unauthorized access to kernel memory, leading to a system crash or a leak of internal kernel information.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04

linux-image-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-1145-aws (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-generic (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-aws (Ubuntu package): before 4.4.0.229.235

linux-image-generic (Ubuntu package): before 4.4.0.229.235

linux-image-virtual (Ubuntu package): before 4.4.0.229.235

External links

http://ubuntu.com/security/notices/USN-5500-1


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: #VU63418

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-2022-1419

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 in vgem_gem_dumb_create() function 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 to the latest version.

Vulnerable software versions

Ubuntu: 16.04

linux-image-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-1145-aws (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-generic (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-aws (Ubuntu package): before 4.4.0.229.235

linux-image-generic (Ubuntu package): before 4.4.0.229.235

linux-image-virtual (Ubuntu package): before 4.4.0.229.235

External links

http://ubuntu.com/security/notices/USN-5500-1


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) Use-after-free

EUVDB-ID: #VU64434

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-2022-1652

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 use-after-free error in the bad_flp_intr() function. A local user can execute a specially-crafted program to cause a denial of service condition on the system or escalate privileges on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04

linux-image-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-1145-aws (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-generic (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-aws (Ubuntu package): before 4.4.0.229.235

linux-image-generic (Ubuntu package): before 4.4.0.229.235

linux-image-virtual (Ubuntu package): before 4.4.0.229.235

External links

http://ubuntu.com/security/notices/USN-5500-1


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) Use-after-free

EUVDB-ID: #VU64861

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-2022-1679

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 ath9k_htc_wait_for_target() function in the Linux kernel’s Atheros wireless adapter driver. A local user can execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04

linux-image-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-1145-aws (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-generic (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-aws (Ubuntu package): before 4.4.0.229.235

linux-image-generic (Ubuntu package): before 4.4.0.229.235

linux-image-virtual (Ubuntu package): before 4.4.0.229.235

External links

http://ubuntu.com/security/notices/USN-5500-1


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: #VU64082

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-2022-1734

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 Marvell NFC device driver implementation in the Linux kernel did not properly perform memory cleanup operations in some situations. A local user can trigger use-after-free to escalate privileges on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04

linux-image-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-1145-aws (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-generic (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-aws (Ubuntu package): before 4.4.0.229.235

linux-image-generic (Ubuntu package): before 4.4.0.229.235

linux-image-virtual (Ubuntu package): before 4.4.0.229.235

External links

http://ubuntu.com/security/notices/USN-5500-1


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) Memory leak

EUVDB-ID: #VU63390

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-2022-28356

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in net/llc/af_llc.c component. A remote attacker can force the system to leak memory and perform denial of service attack.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04

linux-image-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-1145-aws (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-generic (Ubuntu package): before 4.4.0.229.235

linux-image-4.4.0-229-lowlatency (Ubuntu package): before 4.4.0.229.235

linux-image-aws (Ubuntu package): before 4.4.0.229.235

linux-image-generic (Ubuntu package): before 4.4.0.229.235

linux-image-virtual (Ubuntu package): before 4.4.0.229.235

External links

http://ubuntu.com/security/notices/USN-5500-1


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.



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