#VU104809 Division by zero in Linux kernel - CVE-2022-49294

Vulnerability identifier: #VU104809

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-2022-49294

CWE-ID: CWE-369

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 a division by zero error within the get_pixel_clk_frequency_100hz() function in drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.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/07efce8269a038c37814eb656b4de14aa3015fc6
https://git.kernel.org/stable/c/10ef82d6e0af5536ec64770c07f6bbabfdd6977c
https://git.kernel.org/stable/c/49947b906a6bd9668eaf4f9cf691973c25c26955
https://git.kernel.org/stable/c/96725758eff7b3805e4e94d1443a100757412720

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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.