GHSA-RJ9V-3CX4-5WVC

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30
VLAI?
Details

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

media: av7110: prevent underflow in write_ts_to_decoder()

The buf[4] value comes from the user via ts_play(). It is a value in the u8 range. The final length we pass to av7110_ipack_instant_repack() is "len - (buf[4] + 1) - 4" so add a check to ensure that the length is not negative. It's not clear that passing a negative len value does anything bad necessarily, but it's not best practice.

With the new bounds checking the "if (!len)" condition is no longer possible or required so remove that.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-54284"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:16:17Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: av7110: prevent underflow in write_ts_to_decoder()\n\nThe buf[4] value comes from the user via ts_play().  It is a value in\nthe u8 range.  The final length we pass to av7110_ipack_instant_repack()\nis \"len - (buf[4] + 1) - 4\" so add a check to ensure that the length is\nnot negative.  It\u0027s not clear that passing a negative len value does\nanything bad necessarily, but it\u0027s not best practice.\n\nWith the new bounds checking the \"if (!len)\" condition is no longer\npossible or required so remove that.",
  "id": "GHSA-rj9v-3cx4-5wvc",
  "modified": "2025-12-30T15:30:35Z",
  "published": "2025-12-30T15:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54284"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/423350af9e27f005611bd881b1df2cab66de943d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/620b983589e0223876bf1463b01100a9c67b56ba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6606e2404ee9e20a3ae5b42fc3660d41b739ed3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6680af5be9f08d830567e9118f76d3e64684db8f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77eeb4732135c18c2fdfab80839645b393f3e774"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b93ab60fe9ed04be0ff155bc30ad39dea23e22b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86ba65e5357bfbb6c082f68b265a292ee1bdde1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca4ce92e3ec9fd3c7c936b912b95c53331d5159c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eed9496a0501357aa326ddd6b71408189ed872eb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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