CVE-2026-53290

Analyzed Analyzed - Analysis Complete

Use-After-Free in Linux Kernel DRM/XE Driver

Publication date: 2026-06-26

Last updated on: 2026-07-08

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe/eustall: Fix drm_dev_put called before stream disable in close In xe_eu_stall_stream_close(), drm_dev_put() is called before the stream is disabled and its resources are freed. If this drops the last reference, the device structures could be freed while the subsequent cleanup code still accesses them, leading to a use-after-free. Fix this by moving drm_dev_put() after all device accesses are complete. This matches the ordering in xe_oa_release(). (cherry picked from commit 35aff528f7297e949e5e19c9cd7fd748cf1cf21c)

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Meta Information

Published

2026-06-26

Last Modified

2026-07-08

Generated

2026-07-17

AI Q&A

2026-06-26

EPSS Evaluated

2026-07-15

NVD

CVE-2026-53290

EUVD

EUVD-2026-39895

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	7.1
linux	linux_kernel	From 6.19 (inc) to 7.0.10 (exc)
linux	linux_kernel	From 6.15 (inc) to 6.18.33 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability exists in the Linux kernel's drm/xe/eustall component. Specifically, in the function xe_eu_stall_stream_close(), the function drm_dev_put() is called before the stream is disabled and its resources are freed. If drm_dev_put() drops the last reference to the device structures at this point, those structures could be freed while the subsequent cleanup code still tries to access them. This results in a use-after-free condition, which is a type of memory error where the system accesses memory that has already been freed.

The fix involved reordering the calls so that drm_dev_put() is called only after all device accesses are complete, preventing the use-after-free scenario.

Impact Analysis

This vulnerability can lead to a use-after-free condition in the Linux kernel, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code with kernel privileges. Such issues can compromise system security and reliability.

Mitigation Strategies

The vulnerability is fixed by updating the Linux kernel to a version that includes the patch which moves drm_dev_put() after all device accesses are complete in the xe_eu_stall_stream_close() function.

Therefore, the immediate mitigation step is to apply the latest kernel updates or patches that address this issue.

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