SB2025120481 - Improper locking in Linux kernel fuse
Published: December 4, 2025
Security Bulletin ID
SB2025120481
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2025-40220)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the fuse_file_release() function in fs/fuse/file.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/26e5c67deb2e1f42a951f022fdf5b9f7eb747b01
- https://git.kernel.org/stable/c/548e1f2bac1d4df91a6138f26bb4ab00323fd948
- https://git.kernel.org/stable/c/83b375c6efef69b1066ad2d79601221e7892745a
- https://git.kernel.org/stable/c/b26923512dbe57ae4917bafd31396d22a9d1691a
- https://git.kernel.org/stable/c/bfd17b6138df0122a95989457d8e18ce0b86165e
- https://git.kernel.org/stable/c/cfd1aa3e2b71f3327cb373c45a897c9028c62b35
- https://git.kernel.org/stable/c/f19a1390af448d9e193c08e28ea5f727bf3c3049