#VU111459 Use-after-free in Linux kernel - CVE-2025-38079

Vulnerability identifier: #VU111459

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-38079

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the hash_accept() function in crypto/algif_hash.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/0346f4b742345d1c733c977f3a7aef5a6419a967
https://git.kernel.org/stable/c/134daaba93193df9e988524b5cd2f52d15eb1993
https://git.kernel.org/stable/c/2f45a8d64fb4ed4830a4b3273834ecd6ca504896
https://git.kernel.org/stable/c/5bff312b59b3f2a54ff504e4f4e47272b64f3633
https://git.kernel.org/stable/c/b2df03ed4052e97126267e8c13ad4204ea6ba9b6
https://git.kernel.org/stable/c/bf7bba75b91539e93615f560893a599c1e1c98bf
https://git.kernel.org/stable/c/c3059d58f79fdfb2201249c2741514e34562b547
https://git.kernel.org/stable/c/f0f3d09f53534ea385d55ced408f2b67059b16e4

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?