ghsa-crhg-x4f2-mvmv
Vulnerability from github
Published
2025-08-19 18:31
Modified
2025-08-19 18:31
Details

In the Linux kernel, the following vulnerability has been resolved:

drm/rockchip: vop2: fail cleanly if missing a primary plane for a video-port

Each window of a vop2 is usable by a specific set of video ports, so while binding the vop2, we look through the list of available windows trying to find one designated as primary-plane and usable by that specific port.

The code later wants to use drm_crtc_init_with_planes with that found primary plane, but nothing has checked so far if a primary plane was actually found.

For whatever reason, the rk3576 vp2 does not have a usable primary window (if vp0 is also in use) which brought the issue to light and ended in a null-pointer dereference further down.

As we expect a primary-plane to exist for a video-port, add a check at the end of the window-iteration and fail probing if none was found.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38597"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-19T17:15:37Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/rockchip: vop2: fail cleanly if missing a primary plane for a video-port\n\nEach window of a vop2 is usable by a specific set of video ports, so while\nbinding the vop2, we look through the list of available windows trying to\nfind one designated as primary-plane and usable by that specific port.\n\nThe code later wants to use drm_crtc_init_with_planes with that found\nprimary plane, but nothing has checked so far if a primary plane was\nactually found.\n\nFor whatever reason, the rk3576 vp2 does not have a usable primary window\n(if vp0 is also in use) which brought the issue to light and ended in a\nnull-pointer dereference further down.\n\nAs we expect a primary-plane to exist for a video-port, add a check at\nthe end of the window-iteration and fail probing if none was found.",
  "id": "GHSA-crhg-x4f2-mvmv",
  "modified": "2025-08-19T18:31:33Z",
  "published": "2025-08-19T18:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38597"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38682edbbad272b5f8c7bf55128b42cd10626f73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e1eef239399927b368f70a716044fb10085627c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9f68bf1d0efeadb6c427c9dbb30f307a7def19b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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