CVE-2026-46311 Details
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.e vm root bo and wptr_obj bo to access the mapping data properly. This fixes the security issue of unmap the wptr_obj while a queue creation is in progress and passing other bo at same address. (cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)
A vulnerability in the Linux kernel's AMDGPU driver related to user queues has been addressed. The issue involved improper management of write pointer (wptr) object mappings, which could lead to accessing outdated data. This vulnerability was present because the wptr object could be unmapped while a queue was still being created, causing conflicts with other buffer objects at the same address. The problem has been fixed by using the 'drm_exec' function to properly manage locks on the virtual memory root buffer object and the write pointer object buffer object, ensuring that the mapping data is accessed correctly.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/336a9186f3a4b65bbd865d93936605ac8a1a3991 | kernel.org | Patch |
| https://git.kernel.org/stable/c/6da7b1242da4455b11c24ce667d1cab1a348c8ea | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.16, < 7.0.9 7.1 rc1 7.1 rc2 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 14, 2026 | CVE Modified | kernel.org |
| Jun 8, 2026 | New CVE Received | kernel.org |