#VU90073 Use-after-free in Linux kernel - CVE-2023-52772
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90073
Vulnerability risk: Low
CVSSv4.0: 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-2023-52772
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
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 unix_stream_recv_urg() function in net/unix/af_unix.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/75bcfc188abf4fae9c1d5f5dc0a03540be602eef
- https://git.kernel.org/stable/c/d179189eec426fe4801e4b91efa1889faed12700
- https://git.kernel.org/stable/c/eae0b295ce16d8c8b4114c3037993191b4bb92f0
- https://git.kernel.org/stable/c/069a3ec329ff43e7869a3d94c62cd03203016bce
- https://git.kernel.org/stable/c/4b7b492615cf3017190f55444f7016812b66611d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.140
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.64
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7