CVE-2026-52950
Received Received - Intake
Use-After-Free in Linux Kernel DRM/XE DMA-BUF

Publication date: 2026-06-24

Last updated on: 2026-06-24

Assigner: kernel.org

Description
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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Meta Information
Published
2026-06-24
Last Modified
2026-06-24
Generated
2026-06-25
AI Q&A
2026-06-24
EPSS Evaluated
N/A
NVD
CVE-2026-52950
EUVD
EUVD-2026-38818
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 2.0 (inc)
linux linux_kernel *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a Use-After-Free (UAF) issue in the Linux kernel's drm/xe/dma-buf component. The problem occurs because a retry loop attempts to reuse a buffer object (bo) that has already been freed on error, leading to unsafe memory access. The fix involves allocating and initializing the buffer object as a single unit before attaching it, making the retry process safe and preventing the UAF condition.

Impact Analysis

This Use-After-Free vulnerability can lead to memory corruption or crashes in the Linux kernel, potentially allowing attackers to execute arbitrary code or cause denial of service. Exploiting this flaw could compromise system stability and security.

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