#VU104467 Use-after-free in Linux kernel - CVE-2022-49288

Vulnerability identifier: #VU104467

Vulnerability risk: Low

CVSSv4.0: 5.9 [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:U/U:Clear]

CVE-ID: CVE-2022-49288

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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_pcm_lib_preallocate_proc_write() function in sound/core/pcm_memory.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/37b12c16beb6f6c1c3c678c1aacbc46525c250f7
https://git.kernel.org/stable/c/51fce708ab8986a9879ee5da946a2cc120f1036d
https://git.kernel.org/stable/c/5ed8f8e3c4e59d0396b9ccf2e639711e24295bb6
https://git.kernel.org/stable/c/69534c48ba8ce552ce383b3dfdb271ffe51820c3
https://git.kernel.org/stable/c/a21d2f323b5a978dedf9ff1d50f101f85e39b3f2
https://git.kernel.org/stable/c/b560d670c87d7d40b3cf6949246fa4c7aa65a00a
https://git.kernel.org/stable/c/e14dca613e0a6ddc2bf6e360f16936a9f865205b
https://git.kernel.org/stable/c/e7786c445bb67a9a6e64f66ebd6b7215b153ff7d

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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.