#VU90804 Improper locking in Linux kernel - CVE-2023-52516

Vulnerability identifier: #VU90804

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-2023-52516

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 __dma_entry_alloc(), __dma_entry_alloc_check_leak() and dma_entry_alloc() functions in kernel/dma/debug.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
http://git.kernel.org/stable/c/c79300599923daaa30f417c75555d5566b3d31ae
http://git.kernel.org/stable/c/ac0d068099349cbca3d93f2e3b15bb329364b08c
http://git.kernel.org/stable/c/be8f49029eca3efbad0d74dbff3cb9129994ffab
http://git.kernel.org/stable/c/fe2b811a02c3244ebf6059039e4a9e715e26a9e3
http://git.kernel.org/stable/c/fb5a4315591dae307a65fc246ca80b5159d296e1

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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.