SB20251230242 - NULL pointer dereference in Linux kernel drm virtio driver
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230242
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-2022-50842)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the virtio_gpu_cmd_transfer_to_host_2d() function in drivers/gpu/drm/virtio/virtgpu_vq.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/36e133af33ea54193378b190cf92c47c12a43d34
- https://git.kernel.org/stable/c/989164305b933af06d69bb91044dafbd01025371
- https://git.kernel.org/stable/c/e473216b42aa1fd9fc6b94b608b42c210c655908
- https://git.kernel.org/stable/c/f122bcb34f1a4b02ef3d95058d8fd1316ea03785
- https://git.kernel.org/stable/c/f134f261d76ae3d5ecf68db642eaa746ceb84cfb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.150