Bug 2451231 (CVE-2026-23338) - CVE-2026-23338 kernel: drm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings
Summary: CVE-2026-23338 kernel: drm/amdgpu/userq: Do not allow userspace to trivially ...
Keywords:
Status: NEW
Alias: CVE-2026-23338
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-25 11:06 UTC by OSIDB Bzimport
Modified: 2026-03-25 14:34 UTC (History)
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Description OSIDB Bzimport 2026-03-25 11:06:00 UTC
In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings

Userspace can either deliberately pass in the too small num_fences, or the
required number can legitimately grow between the two calls to the userq
wait ioctl. In both cases we do not want the emit the kernel warning
backtrace since nothing is wrong with the kernel and userspace will simply
get an errno reported back. So lets simply drop the WARN_ONs.

(cherry picked from commit 2c333ea579de6cc20ea7bc50e9595ef72863e65c)


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