Ubuntu update for linux-oem-5.14

Published: 2022-08-11 | Updated: 2024-06-26

Risk	Low
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2022-2585 CVE-2022-2586 CVE-2022-2588
CWE-ID	CWE-399 CWE-416 CWE-415
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available. Vulnerability #2 is being exploited in the wild. Vulnerability #3 is being exploited in the wild.
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-oem-20.04c (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04b (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04d (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.14.0-1048-oem (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.17.0-1015-oem (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-22.04a (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Resource management error

EUVDB-ID: #VU66394

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2022-2585

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: Yes

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack or escalate privileges on the system.

The vulnerability exists due to improper management of internal resources in POSIX CPU timers when handling death of a process. A local user can crash the kernel or execute arbitrary code.

Mitigation

Update the affected package linux-oem-5.14 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1048.44

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1048.44

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1048.44

linux-image-5.14.0-1048-oem (Ubuntu package): before 5.14.0-1048.55

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1048.44

linux-image-5.17.0-1015-oem (Ubuntu package): before 5.17.0-1015.16

linux-image-oem-22.04a (Ubuntu package): before 5.17.0.1015.14

linux-image-oem-22.04 (Ubuntu package): before 5.17.0.1015.14

CPE2.3

External links

https://ubuntu.com/security/notices/USN-5567-1

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.

2) Use-after-free

EUVDB-ID: #VU66396

Risk: Low

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2022-2586

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 the netfilter subsystem implementation in Linux kernel when preventing one nft object from referencing an nft set in another nft table. A local user can trigger a use-after-free error and execute arbitrary code on the system with elevated privileges.