GHSA-G84Q-9979-4XF8

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-21 18:33
VLAI
Details

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

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces

The Scarlett2 mixer quirk in USB-audio driver may hit a NULL dereference when a malformed USB descriptor is passed, since it assumes the presence of an endpoint in the parsed interface in scarlett2_find_fc_interface(), as reported by fuzzer.

For avoiding the NULL dereference, just add the sanity check of bNumEndpoints and skip the invalid interface.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-43436"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T15:16:55Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces\n\nThe Scarlett2 mixer quirk in USB-audio driver may hit a NULL\ndereference when a malformed USB descriptor is passed, since it\nassumes the presence of an endpoint in the parsed interface in\nscarlett2_find_fc_interface(), as reported by fuzzer.\n\nFor avoiding the NULL dereference, just add the sanity check of\nbNumEndpoints and skip the invalid interface.",
  "id": "GHSA-g84q-9979-4xf8",
  "modified": "2026-05-21T18:33:06Z",
  "published": "2026-05-08T15:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43436"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d4f23885e4b90347c9a1d779af6e79a99b5172a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d542cf3c4c854cdf5d58049771f68926b9eb2b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b014cc945baba75816cda0cf8934be87c9ed4947"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b267255c15d2a5b90c4e926146aa155e5161e264"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df1d8abf36ca3681c21a6809eaa9a1e01ef897a6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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