CVE-2026-80542
Received Received - Intake

NULL Pointer Dereference in AMDGPU Display Manager

Publication date: 2026-08-26

Last updated on: 2026-08-26

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix NULL pointer dereference in amdgpu_dm_crtc_set_vblank() amdgpu_dm_crtc_set_vblank() dereferences acrtc_state->stream when vblank is enabled/queried from DRM_IOCTL_MODE_CRTC_GET_SEQUENCE before a stream is attached to it. BUG: kernel NULL pointer dereference, address: 0000000000000008 RIP: amdgpu_dm_crtc_set_vblank+0x6b/0x4d0 [amdgpu] Call Trace: drm_vblank_enable drm_vblank_get drm_crtc_get_sequence_ioctl drm_ioctl_kernel drm_ioctl Reproduced by running VKCTS with WSI tests enabled on RADV. Guard the enable path on acrtc_state->stream being non-NULL, matching the existing checks in this function. (cherry picked from commit 7b1b31bf6942e6f43509b48da23f8e27269aac39)

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-26
Last Modified
2026-08-26
Generated
2026-08-26
AI Q&A
2026-08-26
EPSS Evaluated
N/A
NVD
CVE-2026-80542
EUVD
EUVD-2026-66457

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
amd amdgpu *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a NULL pointer dereference vulnerability in the Linux kernel's AMD display driver (amdgpu). It occurs when the function amdgpu_dm_crtc_set_vblank() tries to access acrtc_state->stream before a stream is attached, causing a kernel crash.

Detection Guidance

This vulnerability is specific to the Linux kernel's AMD display driver (amdgpu). Detection requires checking kernel logs for NULL pointer dereference errors related to amdgpu_dm_crtc_set_vblank. Monitor logs with: dmesg | grep -i 'NULL pointer dereference' or journalctl -k | grep -i 'amdgpu_dm_crtc_set_vblank'.

Impact Analysis

This vulnerability can cause system instability or crashes when certain graphics operations are performed, particularly when using AMD GPUs with the RADV Vulkan driver and VKCTS tests. It may lead to kernel panics or unexpected reboots.

Mitigation Strategies

Update the Linux kernel to a patched version where this issue is resolved. If using AMD GPU drivers, ensure you have the latest stable release. Avoid running vulnerable workloads until patched. Check kernel version with uname -r and compare against fixed versions.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-80542. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart