CVE-2026-68243

Received Received - Intake

NULL Pointer Dereference in Linux Kernel i915 Driver

Publication date: 2026-08-10

Last updated on: 2026-08-19

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: Fix NULL deref in I915_CONTEXT_PARAM_SSEU Setting context engine slot N into I915_ENGINE_CLASS_INVALID / I915_ENGINE_CLASS_INVALID_NONE and attempting to apply I915_CONTEXT_PARAM_SSEU to the same slot N will deref NULL. Fix that. Discovered using AI-assisted static analysis confirmed by Intel Product Security. (cherry picked from commit 36eda5b5c2d40da41cc0a5403c26986237cf9e87)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-10

Last Modified

2026-08-19

Generated

2026-08-30

AI Q&A

2026-08-10

EPSS Evaluated

2026-08-29

NVD

CVE-2026-68243

EUVD

EUVD-2026-55344

Affected Vendors & Products

Vendor	Product	Version / Range
intel	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel involves a NULL pointer dereference in the drm/i915/gem component. It occurs when setting a context engine slot to an invalid class and then applying the I915_CONTEXT_PARAM_SSEU parameter to the same slot, leading to a crash due to the NULL dereference.

Detection Guidance

This vulnerability is specific to the Linux kernel's i915 graphics driver and requires kernel-level detection. Check kernel logs for NULL pointer dereference errors related to i915 or drm. Use commands like 'dmesg | grep -i i915' or 'journalctl -k | grep -i null deref' to search for relevant errors.

Impact Analysis

This vulnerability could cause system instability or crashes when specific GPU context operations are performed. It may lead to denial-of-service conditions or unexpected behavior in applications using the affected kernel component.

Compliance Impact

This vulnerability is a NULL pointer dereference in the Linux kernel's DRM/i915 graphics driver, specifically related to context engine parameters. It does not directly impact data privacy or security controls required by standards like GDPR or HIPAA.

Mitigation Strategies

Update your Linux kernel to the latest stable version that includes the fix for this issue. If using a distribution kernel, apply available security updates immediately. Reboot the system after updating to ensure the patched kernel is active.

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