SB20251008115 - Double free in Linux kernel md driver
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB20251008115
CSH 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 vulnerability.
1) Double free (CVE-ID: CVE-2023-53665)
CWE-ID: CWE-415 - Double Free
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a double free error within the mddev_unlock() function in drivers/md/md.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.