CVE-2026-31785
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DRM/XE Page Fault Write Access Bypass in Linux Kernel

Publication date: 2026-05-01

Last updated on: 2026-05-01

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe/xe_pagefault: Disallow writes to read-only VMAs The page fault handler should reject write/atomic access to read only VMAs. Add code to handle this in xe_pagefault_service after the VMA lookup. v2: - Apply max line length (Matthew) (cherry picked from commit 714ee6754ac5fa3dc078856a196a6b124cd797a0)
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Meta Information
Published
2026-05-01
Last Modified
2026-05-01
Generated
2026-06-16
AI Q&A
2026-05-01
EPSS Evaluated
2026-06-15
NVD
CVE-2026-31785
EUVD
EUVD-2026-26598
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel's drm/xe/xe_pagefault component. It involves the page fault handler not properly rejecting write or atomic access attempts to read-only Virtual Memory Areas (VMAs). The fix involves adding code to the xe_pagefault_service to ensure that write attempts to read-only VMAs are disallowed.

Impact Analysis

If exploited, this vulnerability could allow unauthorized write or atomic operations to memory areas that are intended to be read-only. This could lead to unintended modification of memory contents, potentially causing system instability, data corruption, or security breaches.

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