CVE-2026-68267
Received Received - Intake

Denial of Service in Linux Kernel DRM/XE Driver

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists Unconditionally whitelisting OA registers is a security violation. Set RING_FORCE_TO_NONPRIV_DENY bit in OA nonpriv slots, so that OA registers don't get whitelisted by default after probe, gt reset, resume and engine reset. (cherry picked from commit 90511bdcfda97211c01f1d945d4ea616578d8fca)

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-68267
EUVD
EUVD-2026-55368

Affected Vendors & Products

Currently, no data is known.

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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 in the Linux kernel involves a security issue where OA (OACONTROL) registers are unconditionally whitelisted after certain operations like probe, GT reset, resume, and engine reset. This violates security by allowing unauthorized access to these registers by default.

Detection Guidance

This vulnerability is specific to the Linux kernel's drm/xe/rtp component and cannot be detected via standard network commands. Check kernel logs for OA whitelist violations or errors related to RING_FORCE_TO_NONPRIV_DENY after probe, reset, or resume events.

Impact Analysis

This vulnerability could allow attackers to gain unauthorized access to system resources or sensitive data by exploiting the improper whitelisting of OA registers. It may lead to privilege escalation or system compromise if exploited.

Mitigation Strategies

Update the Linux kernel to a patched version that includes the fix for this vulnerability. Monitor kernel logs for OA whitelist errors and ensure the RING_FORCE_TO_NONPRIV_DENY bit is properly set in OA nonpriv slots.

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