SB20250916298 - Race condition in Linux kernel smb client
Published: September 16, 2025
Security Bulletin ID
SB20250916298
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Race condition (CVE-ID: CVE-2025-39825)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the cifs_rename2() function in fs/smb/client/inode.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2
- https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2
- https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358
- https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c
- https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747