Riskcovery

CVE-2026-80542

drm/amd/display: Fix NULL pointer dereference in amdgpu_dm_crtc_set_vblank()

State
Published
Severity
Not scored
Published
Aug 26, 2026
Updated
Aug 26, 2026
Reserved
Aug 26, 2026

Read the record on cve.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)

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 34d66bc7ff10e146a4cec76cf286979740a10954 to before 5045fb4c70bfde36a05e0f41cf35ddfb6d85d3afAffected
  • 34d66bc7ff10e146a4cec76cf286979740a10954 to before 4a6bc92fac30070511d66bcce4ed9b7dac983180Affected
  • 34d66bc7ff10e146a4cec76cf286979740a10954 to before f2a1c4c6fe0a6fcde02e59dde546dba28d283635Affected
LinuxLinux
  • 6.18Affected
  • before 6.18Not affected
  • 6.18.46 through 6.18.*Not affected
  • 7.1.10 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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