Bug 2492318 (CVE-2026-52950) - CVE-2026-52950 kernel: drm/xe/dma-buf: fix UAF with retry loop
Summary: CVE-2026-52950 kernel: drm/xe/dma-buf: fix UAF with retry loop
Keywords:
Status: NEW
Alias: CVE-2026-52950
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 18:05 UTC by OSIDB Bzimport
Modified: 2026-06-26 17:49 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-06-24 18:05:23 UTC
In the Linux kernel, the following vulnerability has been resolved:

drm/xe/dma-buf: fix UAF with retry loop

Retry doesn't work here, since bo will be freed on error, leading to
UAF. However, now that we do the alloc & init before the attach, we can
now combine this as one unit and have the init do the alloc for us. This
should make the retry safe.

Reported by Sashiko.

v2: Fix up the error unwind (CI)

(cherry picked from commit 479669418253e0f27f8cf5db01a731352ea592e7)


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