SB20250520133 - Use-after-free in Linux kernel smb server
Published: May 20, 2025 Updated: May 23, 2025
Security Bulletin ID
SB20250520133
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-37899)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a use-after-free error within the smb2_session_logoff() function in fs/smb/server/smb2pdu.c. A remote attacker can send specially crafted data to the SMB client during session logoff and compromise the affected system.
Remediation
Install update from vendor's website.