GHSA-59F3-F666-RHR8

Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-19 18:32
VLAI
Details

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

media: cedrus: skip invalid H.264 reference list entries

Cedrus consumes H.264 ref_pic_list0/ref_pic_list1 entries from the stateless slice control and later uses their indices to look up decode->dpb[] in _cedrus_write_ref_list().

Rejecting such controls in cedrus_try_ctrl() would break existing userspace, since stateless H.264 reference lists may legitimately carry out-of-range indices for missing references. Instead, guard the actual DPB lookup in Cedrus and skip entries whose indices do not fit the fixed V4L2_H264_NUM_DPB_ENTRIES array.

This keeps the fix local to the driver use site and avoids out-of-bounds reads from malformed or unsupported reference list entries.

Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-68229"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T13:20:11Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cedrus: skip invalid H.264 reference list entries\n\nCedrus consumes H.264 ref_pic_list0/ref_pic_list1 entries from the\nstateless slice control and later uses their indices to look up\ndecode-\u003edpb[] in _cedrus_write_ref_list().\n\nRejecting such controls in cedrus_try_ctrl() would break existing\nuserspace, since stateless H.264 reference lists may legitimately carry\nout-of-range indices for missing references. Instead, guard the actual\nDPB lookup in Cedrus and skip entries whose indices do not fit the fixed\nV4L2_H264_NUM_DPB_ENTRIES array.\n\nThis keeps the fix local to the driver use site and avoids out-of-bounds\nreads from malformed or unsupported reference list entries.",
  "id": "GHSA-59f3-f666-rhr8",
  "modified": "2026-08-19T18:32:11Z",
  "published": "2026-08-10T15:33:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68229"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0af8945fcae742d099f59f3c725eb67235953a31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10358ea986c3c85516d1c8206486464f79d36e76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1db34683b0fbbcb3bc162380c11514ea0a44e8ab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ee8327c85b3ac7b532d2d6a1e3a295d5ad7414a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ff6f728a2433b420bb372cb0e8a4eea3f2e1a4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9924cb548ee7753a6473997949c3ec48092de0b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6a109771c51920beb620f30778c29da823cc34c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e53112c2de88982e66c369aee2120d5efd78df30"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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