SB20251230120 - Memory leak in Linux kernel cifs
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251230120
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) Memory leak (CVE-ID: CVE-2022-50859)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the smb3_validate_negotiate() function in fs/cifs/smb2pdu.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/60480291c1fcafad8425d93f771b5bcc2bd398b4
- https://git.kernel.org/stable/c/9312e04b6c6bc46354ecd0cc82052a2b3df0b529
- https://git.kernel.org/stable/c/943eb0ede74ecd609fdfd3f0b83e0d237613e526
- https://git.kernel.org/stable/c/d0050ec3ebbcb3451df9a65b8460be9b9e02e80c
- https://git.kernel.org/stable/c/e98ecc6e94f4e6d21c06660b0f336df02836694f
- https://git.kernel.org/stable/c/fada9b8c95c77bb46b89e18117405bc90fce9f74
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3