SB2025091999 - NULL pointer dereference in Linux kernel md driver
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091999
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-2022-50402)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the md_bitmap_resize() function in drivers/md/md-bitmap.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/100caacfa0ed26e061954c90cdc835d42f709536
- https://git.kernel.org/stable/c/21e9aac9a74d30907d44bae0d24c036cb3819406
- https://git.kernel.org/stable/c/3bd548e5b819b8c0f2c9085de775c5c7bff9052f
- https://git.kernel.org/stable/c/5d8d046f3dba939e74e2414f009df426700430ed
- https://git.kernel.org/stable/c/99bef41f8e8d1d52b5cb34f2f193f1346192752b
- https://git.kernel.org/stable/c/b621d17fe8b079574c773800148fb86907f3445d
- https://git.kernel.org/stable/c/ff3b7e12bc9f50de05c9d82b5b79e23e5be888f1
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.16