CVE-2026-80542

Not scored yetLast modified Aug 26, 2026

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)

Metrics

No CVSS score has been published yet.

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 34d66bc7ff10e146a4cec76cf286979740a10954, < 5045fb4c70bfde36a05e0f41cf35ddfb6d85d3af; >= 34d66bc7ff10e146a4cec76cf286979740a10954, < 4a6bc92fac30070511d66bcce4ed9b7dac983180; >= 34d66bc7ff10e146a4cec76cf286979740a10954, < f2a1c4c6fe0a6fcde02e59dde546dba28d283635
LinuxLinux6.18

References

Timeline

Published
Aug 26, 2026
Last modified
Aug 26, 2026
NVD status
Received

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