SB2026021908 - Input validation error in Linux kernel smb client
Published: February 19, 2026
Security Bulletin ID
SB2026021908
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-2026-23230)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the fs/smb/client/cached_dir.h. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.