{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-52445",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-52445"
  ],
  "published": "2024-02-22T16:22:12Z",
  "summary": "media: pvrusb2: fix use after free on context disconnection",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pvrusb2: fix use after free on context disconnection\n\nUpon module load, a kthread is created targeting the\npvr2_context_thread_func function, which may call pvr2_context_destroy\nand thus call kfree() on the context object. However, that might happen\nbefore the usb hub_event handler is able to notify the driver. This\npatch adds a sanity check before the invalid read reported by syzbot,\nwithin the context disconnection call stack.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
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        "1:6.1.54-1+rpt2",
        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1"
      ],
      "ecosystem_specific": {
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            "binary_version": "1:6.1.21-1+rpt1"
          },
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-52445"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ec36c134dd020d28e312c2f1766f85525e747aab"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ec3634ebe23fc3c44ebc67c6d25917300bc68c08"
    },
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      "url": "https://git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e"
    },
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      "url": "https://git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795"
    },
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      "url": "https://git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c"
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      "type": "FIX",
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  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}