CVE-2026-31785 drm/xe/xe_pagefault: Disallow writes to read-only VMAs

What is CVE-2026-31785?

CVE-2026-31785 is a medium-severity missing authorization vulnerability in Linux kernel, published on 1 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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)

Which versions are affected by CVE-2026-31785?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-31785?

Apply the vendor's patch.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-31785 being exploited?

There is no known exploitation of CVE-2026-31785 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-31785, GHSA-w25h-464p-67cx, UBUNTU-CVE-2026-31785.