#VU91520 Improper locking in Linux kernel - CVE-2022-48704

Vulnerability identifier: #VU91520

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-2022-48704

CWE-ID: CWE-667

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 improper locking within the radeon_suspend_kms() function in drivers/gpu/drm/radeon/radeon_device.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/b878da58df2c40b08914d3960e2224040fd1fbfe
https://git.kernel.org/stable/c/4e25e8f27fdbdc6fd55cc572a9939bf24500b9e8
https://git.kernel.org/stable/c/c0a45f41fde4a0f2c900f719817493ee5c4a5aa3
https://git.kernel.org/stable/c/c72d97146fc5a4dff381b1737f6167e89860430d
https://git.kernel.org/stable/c/826b46fd5974113515abe9e4fc8178009a8ce18c
https://git.kernel.org/stable/c/5a7a5b2edac4b05abd744eeaebda46d9dacd952d
https://git.kernel.org/stable/c/16cb367daa446923d82e332537f446a4cc784b40
https://git.kernel.org/stable/c/f461950fdc374a3ada5a63c669d997de4600dffe

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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.