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CVE-2026-46311

drm/amdgpu/userq: fix access to stale wptr mapping

HIGH
7.8
CVSS Score
Published: June 8, 2026 at 03:50 PM UTC
Updated: October 19, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.16 ≤ v < 7.0.95fb2f7fc21a3668e5794cc0d153641b9719713e17.17.1 rc17.1 rc2
Vendor states this is fixed in 336a9186f3a4b65bbd865d93936605ac8a1a3991 (fixed)
Vendor states this is fixed in 6da7b1242da4455b11c24ce667d1cab1a348c8ea (fixed)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.57 (unaffected)
Vendor states this is fixed in 7.0.9 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Patch
Source: cverecord
https://git.kernel.org/stable/c/336a9186f3a4b65bbd865d93936605ac8a1a3991
Patch
Source: cverecord
https://git.kernel.org/stable/c/6da7b1242da4455b11c24ce667d1cab1a348c8ea
Source: cverecord
https://git.kernel.org/stable/c/2da62dbb4169e758c0b1a9378b39a373bf4fb111

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-362

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