CVE-2026-46311: drm/amdgpu/userq: fix access to stale wptr mapping
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/userq: fix access to stale wptr mapping
Use drmexec to take both locks i.e vm root bo and wptrobj bo to access the mapping data properly.
This fixes the security issue of unmap the wptrobj while a queue creation is in progress and passing other bo at same address.
(cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-46311?
CVE-2026-46311 has a risk rating of 44, indicating it poses a significant threat to affected systems.
How do I fix CVE-2026-46311?
To fix CVE-2026-46311, upgrade to the latest version of the Linux kernel where this vulnerability has been resolved.
What type of vulnerability is CVE-2026-46311?
CVE-2026-46311 is a security vulnerability in the Linux kernel related to improper access to stale mapping data.
Which software versions are affected by CVE-2026-46311?
CVE-2026-46311 affects specific versions of the Linux kernel, particularly those prior to the fix implemented in the latest releases.
What are the consequences of CVE-2026-46311 if unpatched?
If unpatched, CVE-2026-46311 may allow unauthorized access or manipulation of memory mapping, potentially leading to system instability or security breaches.