#VU93142 Buffer overflow in Linux kernel - CVE-2023-52874

Vulnerability identifier: #VU93142

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-2023-52874

CWE-ID: CWE-119

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 memory corruption within the SYM_FUNC_END() function in arch/x86/coco/tdx/tdcall.S. 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/2191950d35d8f81620ea8d4e04d983f664fe3a8a
https://git.kernel.org/stable/c/de4c5bacca4f50233f1f791bec9eeb4dee1b14cd
https://git.kernel.org/stable/c/5d092b66119d774853cc9308522620299048a662

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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.