Use-after-free in Linux kernel - CVE-2023-52852
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90082
CSH Severity: Low
CVSS v4: 8.5 [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]
CVE-ID: CVE-2023-52852
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the f2fs_wait_on_block_writeback() function in fs/f2fs/data.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2023-52852
Install update from vendor's website.
Linux kernel - addressed in versions 5.15.139, 6.1.63, 6.5.12, 6.6.2, 6.7
External References
- https://git.kernel.org/stable/c/8c4504cc0c64862740a6acb301e0cfa59580dbc5
- https://git.kernel.org/stable/c/9375ea7f269093d7c884857ae1f47633a91f429c
- https://git.kernel.org/stable/c/932ddb5c29e884cc6fac20417ece72ba4a35c401
- https://git.kernel.org/stable/c/9d065aa52b6ee1b06f9c4eca881c9b4425a12ba2
- https://git.kernel.org/stable/c/b0327c84e91a0f4f0abced8cb83ec86a7083f086
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.139
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.63
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7