Use-after-free in Linux kernel - CVE-2023-52751
Published: May 30, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90063
CSH Severity: Low
CVSS v4.0: 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-2023-52751
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability 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 find_or_create_cached_dir(), spin_unlock() and open_cached_dir() functions in fs/smb/client/cached_dir.c. A local user can escalate privileges on the system.
How to mitigate CVE-2023-52751
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/6db94d08359c43f2c8fe372811cdee04564a41b9
- https://git.kernel.org/stable/c/93877b9afc2994c89362007aac480a7b150f386f
- https://git.kernel.org/stable/c/5c86919455c1edec99ebd3338ad213b59271a71b
- 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