SB2026070255 - Use of uninitialized resource in Linux kernel drm virtio driver
Published: July 2, 2026
Security Bulletin ID
SB2026070255
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) Use of uninitialized resource (CVE-ID: CVE-2026-53347)
CWE-ID: CWE-908 - Use of Uninitialized Resource
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to access of uninitialized data in the virtio-gpu driver removal path when removing or unbinding the driver with KMS disabled. A local user can trigger driver removal or unbinding to cause a denial of service.
Only configurations where the virtio-gpu driver is built with KMS disabled are affected.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/15e561869a8b4e4db69733be1d6f33770664f989
- https://git.kernel.org/stable/c/19a6a00ff50c284f3a9818882ad2be58b33b790a
- https://git.kernel.org/stable/c/38a5f891cda6d121c149c94cda89c31ec7024ee3
- https://git.kernel.org/stable/c/ed3e134700a2e07caa99b9bc0683ebbe0327c562
- https://git.kernel.org/stable/c/f329e8325e054bd6d84d10904f8dd51137281b92