SB20250916225 - Improper locking in Linux kernel md driver
Published: September 16, 2025
Security Bulletin ID
SB20250916225
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) Improper locking (CVE-ID: CVE-2025-39791)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the MODULE_PARM_DESC(), crypt_map() and crypt_io_hints() functions in drivers/md/dm-crypt.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.