#VU104607 NULL pointer dereference in Linux kernel - CVE-2022-49615

Vulnerability identifier: #VU104607

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-2022-49615

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_sdca_index_write() and rt711_sdca_index_read() functions in sound/soc/codecs/rt711-sdca.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/1df793d479bef546569fc2e409ff8bb3f0fb8e99
https://git.kernel.org/stable/c/269be8b2907378adf72d7347cfa43ef230351a06
https://git.kernel.org/stable/c/7bb71133cae88d3003a3490b97864af76533072b

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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.