#VU91536 Improper locking in Linux kernel - CVE-2024-26629

Vulnerability identifier: #VU91536

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-2024-26629

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 check_for_locks() and nfsd4_release_lockowner() functions in fs/nfsd/nfs4state.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/e4cf8941664cae2f89f0189c29fe2ce8c6be0d03
https://git.kernel.org/stable/c/b7d2eee1f53899b53f069bba3a59a419fc3d331b
https://git.kernel.org/stable/c/8f5b860de87039b007e84a28a5eefc888154e098
https://git.kernel.org/stable/c/edcf9725150e42beeca42d085149f4c88fa97afd
https://git.kernel.org/stable/c/c6f8b3fcc62725e4129f2c0fd550d022d4a7685a

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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.