#VU106161 Use-after-free in Linux kernel - CVE-2023-53025

Vulnerability identifier: #VU106161

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-2023-53025

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 fs/nfsd/nfs4proc.c. A local user can escalate privileges on the system.

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/0a27dcd5343026ac0cb168ee63304255372b7a36
https://git.kernel.org/stable/c/32d5eb95f8f0e362e37c393310b13b9e95404560
https://git.kernel.org/stable/c/6ac4c383c39f8f2f955f868d1ad9365c2363e80b
https://git.kernel.org/stable/c/e6cf91b7b47ff82b624bdfe2fdcde32bb52e71dd

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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.