{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-74502",
  "modified": "2026-10-07T14:35:31Z",
  "upstream": [
    "CVE-2026-74502"
  ],
  "published": "2026-08-15T12:28:42Z",
  "summary": "ALSA: ump: fix double free of out_cvts on rawmidi error",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ump: fix double free of out_cvts on rawmidi error\n\nsnd_ump_attach_legacy_rawmidi() allocates the legacy conversion array\nump->out_cvts and, on the snd_rawmidi_new() error path, frees it with\nkfree() but leaves ump->out_cvts pointing at the freed memory.  When the\nendpoint is later torn down, snd_ump_endpoint_free() frees ump->out_cvts\na second time, resulting in a double free.\n\nThe host snd-usb-audio driver attaches the legacy rawmidi for any USB\nMIDI 2.0 (UMP) device, so a device that makes snd_rawmidi_new() fail\nreaches this path on enumeration.\n\nClear ump->out_cvts after freeing it on the error path so it is not\nfreed again during teardown.\n\nDiscovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:13",
        "name": "linux"
      },
      "versions": [
        "1:6.18.39-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-2712",
            "binary_version": "1:6.18.39-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-v6",
            "binary_version": "1:6.18.39-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-v7",
            "binary_version": "1:6.18.39-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-v8",
            "binary_version": "1:6.18.39-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-v8-rt",
            "binary_version": "1:6.18.39-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.18.39-1+rpt1": {
            "linux_commit": "60ea684a8ace97bb0db1a16e20753bdd6ab371ff",
            "upstream_version": "6.18.39",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.18.44"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-74502"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e84d2e53a05c78a04d1343eeb0f31a79456e79fc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3302aaeac4f7ee6b775850db21d5f61064ce70ad"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/032746c2dd9a4ea0774b04ac8a29e2ea628f106e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c57001f55f97ef856fb6527e376c5c4a056a53a4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/70c977815af0d997feb2d0c5d284d55689bf7051"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}