#VU104608 NULL pointer dereference in Linux kernel - CVE-2022-49616

Vulnerability identifier: #VU104608

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-2022-49616

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 rt711_jack_detect_handler() function in sound/soc/codecs/rt711.c, within the rt711_sdca_jack_detect_handler() function in sound/soc/codecs/rt711-sdca.c, within the rt700_jack_detect_handler() function in sound/soc/codecs/rt700.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/0484271ab0ce50649329fa9dc23c50853c5b26a4
https://git.kernel.org/stable/c/07a606e1389a63b61cb8cd591026f30529117573
https://git.kernel.org/stable/c/1d75b73ec6d6b705cca528b36d8315e43e8d7fa5

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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.