SB2026011424 - Use-after-free in Linux kernel fuse
Published: January 14, 2026
Security Bulletin ID
SB2026011424
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-2025-68821)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the fuse_file_put() and fuse_file_open() functions in fs/fuse/file.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/4703bc0e8cd3409acb1476a70cb5b7ff943cf39a
- https://git.kernel.org/stable/c/bd5603eaae0aabf527bfb3ce1bb07e979ce5bd50
- https://git.kernel.org/stable/c/cf74785c00b8b1c0c4a9dd74bfa9c22d62e2d99f
- https://git.kernel.org/stable/c/e0d6de83a4cc22bbac72713f3a58121af36cc411
- https://git.kernel.org/stable/c/fbba8b00bbe4e4f958a2b0654cc1219a7e6597f6