SB20250916396 - Input validation error in Linux kernel nfs
Published: September 16, 2025
Security Bulletin ID
SB20250916396
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-2025-39798)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the nfs4_server_capabilities() function in fs/nfs/nfs4proc.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/175afda783e38c0660f2afc0602dd9c83d4e7ee1
- https://git.kernel.org/stable/c/3924dab90816d0c683a110628ef386f83a9d1e13
- https://git.kernel.org/stable/c/50e0fd0050e510e749e1fdd1d7158e419ff8f3b9
- https://git.kernel.org/stable/c/73fcb101bb3eb2a552d7856a476b2c0bc3b5ef9e
- https://git.kernel.org/stable/c/816a6f60c2c2b679a33fa4276442bafd11473651
- https://git.kernel.org/stable/c/95eb0d97ab98a10e966125c1f274e7d0fc0992b3
- https://git.kernel.org/stable/c/987c20428f067c1c7f29ed0a2bd8c63fa74b1c2c
- https://git.kernel.org/stable/c/a8ffee4abd8ec9d7a64d394e0306ae64ba139fd2
- https://git.kernel.org/stable/c/b01f21cacde9f2878492cf318fee61bf4ccad323