SB2026011463 - Input validation error in Linux kernel smb server
Published: January 14, 2026
Security Bulletin ID
SB2026011463
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-2025-68806)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the smb2_set_ea() function in fs/smb/server/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/6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4
- https://git.kernel.org/stable/c/95d7a890e4b03e198836d49d699408fd1867cb55
- https://git.kernel.org/stable/c/a28a375a5439eb474e9f284509a407efb479c925
- https://git.kernel.org/stable/c/cae52c592a07e1d3fa3338a5f064a374a5f26750
- https://git.kernel.org/stable/c/d26af6d14da43ab92d07bc60437c62901dc522e6