#VU115881 Use-after-free in Linux kernel - CVE-2023-53440
Published: September 19, 2025 / Updated: September 22, 2025
Vulnerability identifier: #VU115881
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-2023-53440
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 destroy_nilfs(), load_nilfs() and init_nilfs() functions in fs/nilfs2/the_nilfs.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/1942ccb7d95f287a312fcbabfa8bc9ba501b1953
- https://git.kernel.org/stable/c/3dbee84bf9e3273c4bb9ca6fc18ff22fba23dd24
- https://git.kernel.org/stable/c/42560f9c92cc43dce75dbf06cc0d840dced39b12
- https://git.kernel.org/stable/c/5fe0ea141fbb887d407f1bf572ebf24427480d5c
- https://git.kernel.org/stable/c/83b16a60e413148685739635901937e2f16a7873
- https://git.kernel.org/stable/c/d20dcec8f326deb77b6688f8441e014045dac457
- https://git.kernel.org/stable/c/d540aea451ab5489777a8156560f1388449b3109
- https://git.kernel.org/stable/c/daf4eb3a908b108279b60172d2f176e70d2df875
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.11