Improper access control in Linux kernel - CVE-2026-31785
Published: May 2, 2026
Vulnerability identifier: #VU128910
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-31785
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to modify read-only memory mappings.
The vulnerability exists due to improper access control in xe_pagefault_service when handling write or atomic page faults on read-only VMAs. A local user can trigger a write or atomic access to modify read-only memory mappings.
Affected software
Linux kernel
How to mitigate CVE-2026-31785
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3