#VU96191 Buffer overflow in Linux kernel - CVE-2024-43856

Vulnerability identifier: #VU96191

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-2024-43856

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 dmam_free_coherent() function in kernel/dma/mapping.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/f993a4baf6b622232e4c190d34c220179e5d61eb
https://git.kernel.org/stable/c/1fe97f68fce1ba24bf823bfb0eb0956003473130
https://git.kernel.org/stable/c/22094f5f52e7bc16c5bf9613365049383650b02e
https://git.kernel.org/stable/c/28e8b7406d3a1f5329a03aa25a43aa28e087cb20

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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.