#VU105411 NULL pointer dereference in Linux kernel - CVE-2022-49733

Vulnerability identifier: #VU105411

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49733

CWE-ID: CWE-476

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 perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the snd_pcm_oss_sync() function in sound/core/oss/pcm_oss.c. A local user can perform a denial of service (DoS) attack.

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/4051324a6dafd7053c74c475e80b3ba10ae672b0
https://git.kernel.org/stable/c/723ac5ab2891b6c10dd6cc78ef5456af593490eb
https://git.kernel.org/stable/c/8015ef9e8a0ee5cecfd0cb6805834d007ab26f86
https://git.kernel.org/stable/c/8423f0b6d513b259fdab9c9bf4aaa6188d054c2d
https://git.kernel.org/stable/c/fce793a056c604b41a298317cf704dae255f1b36

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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.