SB2025121092 - NULL pointer dereference in Linux kernel md driver
Published: December 10, 2025 Updated: December 12, 2025
Security Bulletin ID
SB2025121092
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) NULL pointer dereference (CVE-ID: CVE-2023-53848)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the r5l_exit_log() function in drivers/md/raid5-cache.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/71cf23271f015a57038bdc4669952096f9fe5500
- https://git.kernel.org/stable/c/a705b11b358dee677aad80630e7608b2d5f56691
- https://git.kernel.org/stable/c/ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b
- https://git.kernel.org/stable/c/c406984738215dc20ac2dc63e49d70f20797730e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.3