In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: fix access to stale wptr mapping Use drm_exec to take both loc...
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: fix access to stale wptr mapping Use drm_exec to take both locks i
AI Analyst Comment
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
---METADATA---
VENDOR: Linux
PRODUCT: Kernel
AFFECTED_VERSIONS: See vendor advisory for specific affected versions
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Description Summary:
A concurrency vulnerability in the Linux kernel's AMDGPU driver allows access to a stale write pointer (wptr) mapping, leading to potential memory corruption.
Executive Summary:
A concurrency flaw in the Linux kernel's AMDGPU driver can lead to stale pointer access, posing a risk of memory corruption and privilege escalation.
Vulnerability Details
CVE-ID: CVE-2026-46311
Affected Software: Linux Kernel (AMDGPU Driver)
Affected Versions: See vendor advisory for specific affected versions
Vulnerability: The issue is located in the
drm/amdgpu/userqcomponent. A race condition allows access to a stalewptrmapping because the driver failed to take the necessary locks during the operation.Business Impact
Given the CVSS score of 7.8, this vulnerability represents a significant risk to systems utilizing AMD GPUs. An attacker could exploit this to corrupt kernel memory, resulting in system crashes or the potential for privilege escalation, which is particularly critical in environments using GPU-accelerated workloads.
Remediation Plan
Immediate Action: Update the Linux kernel to the latest version, ensuring the AMDGPU driver fix is included.
Proactive Monitoring: Monitor for driver-specific errors or system instability related to GPU-accelerated processes.
Compensating Controls: Limit access to GPU devices to trusted users and ensure that kernel module loading is restricted to signed modules.
Exploitation Status
Public Exploit Available: false
Analyst Notes: As of June 15, 2026, there is no public information indicating active exploitation of this vulnerability. However, due to the nature of the flaw, the potential for exploitation is high.
Analyst Recommendation
Drivers are a common target for privilege escalation attacks. It is critical to apply kernel updates that address these driver-level vulnerabilities to ensure the overall security and stability of the system.