SB20250422177 - Input validation error in Linux kernel nfsd
Published: April 22, 2025 Updated: May 10, 2025
Security Bulletin ID
SB20250422177
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) Input validation error (CVE-ID: CVE-2025-39688)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the nfsd4_lookup_stateid() and nfsd4_delegreturn() functions in fs/nfsd/nfs4state.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/52e209203c35a4fbff8af23cd3613efe5df40102
- https://git.kernel.org/stable/c/5bcb44e650bc4ec7eac23df90c5e011a77fa2beb
- https://git.kernel.org/stable/c/d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13
- https://git.kernel.org/stable/c/dc6f3295905d7185e71091870119a8c11c3808cc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.11