SB2025091958 - Use-after-free in Linux kernel nilfs2
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091958
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-53440)
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 website.
References
- 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