{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-56532",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-56532"
  ],
  "published": "2024-12-27T14:12:25Z",
  "summary": "ALSA: us122l: Use snd_card_free_when_closed() at disconnection",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: us122l: Use snd_card_free_when_closed() at disconnection\n\nThe USB disconnect callback is supposed to be short and not too-long\nwaiting.  OTOH, the current code uses snd_card_free() at\ndisconnection, but this waits for the close of all used fds, hence it\ncan take long.  It eventually blocks the upper layer USB ioctls, which\nmay trigger a soft lockup.\n\nAn easy workaround is to replace snd_card_free() with\nsnd_card_free_when_closed().  This variant returns immediately while\nthe release of resources is done asynchronously by the card device\nrelease at the last close.\n\nThe loop of us122l->mmap_count check is dropped as well.  The check is\nuseless for the asynchronous operation with *_when_closed().",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.120",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-56532"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/020cbc4d7414f0962004213e2b7bc5cc607e9ec7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/75f418b249d84021865eaa59515d3ed9b75ce4d6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bf0aa35a7cb8602cccf2387712114e836f65c154"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9a48bd2184b142c92a4e17eac074c61fcf975bc9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bc778ad3e495333eebda36fe91d5b2c93109cc16"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2938dd2648522336133c151dd67bb9bf01cbd390"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9b27924dc8d7f8a8c35e521287d4ccb9a006e597"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9d5c530e4d70f64b1114f2cc29ac690ba7ac4a38"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b7df09bb348016943f56b09dcaafe221e3f73947"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}