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CVE-2026-80542 (GCVE-0-2026-80542)

Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-08-26 14:37
VLAI
Title
drm/amd/display: Fix NULL pointer dereference in amdgpu_dm_crtc_set_vblank()
Summary
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)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 34d66bc7ff10e146a4cec76cf286979740a10954 , < 5045fb4c70bfde36a05e0f41cf35ddfb6d85d3af (git)
Affected: 34d66bc7ff10e146a4cec76cf286979740a10954 , < 4a6bc92fac30070511d66bcce4ed9b7dac983180 (git)
Affected: 34d66bc7ff10e146a4cec76cf286979740a10954 , < f2a1c4c6fe0a6fcde02e59dde546dba28d283635 (git)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.46 , ≤ 6.18.* (semver)
Unaffected: 7.1.10 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c"
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              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix NULL pointer dereference in amdgpu_dm_crtc_set_vblank()\n\namdgpu_dm_crtc_set_vblank() dereferences acrtc_state-\u003estream when\nvblank is enabled/queried from DRM_IOCTL_MODE_CRTC_GET_SEQUENCE before\na stream is attached to it.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000008\nRIP: amdgpu_dm_crtc_set_vblank+0x6b/0x4d0 [amdgpu]\nCall Trace:\n drm_vblank_enable\n drm_vblank_get\n drm_crtc_get_sequence_ioctl\n drm_ioctl_kernel\n drm_ioctl\n\nReproduced by running VKCTS with WSI tests enabled on RADV.\n\nGuard the enable path on acrtc_state-\u003estream being non-NULL, matching\nthe existing checks in this function.\n\n(cherry picked from commit 7b1b31bf6942e6f43509b48da23f8e27269aac39)"
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/f2a1c4c6fe0a6fcde02e59dde546dba28d283635"
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      "title": "drm/amd/display: Fix NULL pointer dereference in amdgpu_dm_crtc_set_vblank()",
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    "cveId": "CVE-2026-80542",
    "datePublished": "2026-08-26T14:37:15.168Z",
    "dateReserved": "2026-08-26T14:34:25.765Z",
    "dateUpdated": "2026-08-26T14:37:15.168Z",
    "state": "PUBLISHED"
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      "current_release_date": "2026-08-27T13:38:39+00:00",
      "cve": "CVE-2026-80542",
      "id": "CVE-2026-80542",
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      "product_status:known_affected": "198",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/amd/display: Fix NULL pointer dereference in amdgpu_dm_crtc_set_vblank()",
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      "cve": "CVE-2026-80542",
      "id": "CVE-2026-80542",
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80542.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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