GHSA-M4VX-WP7V-HX3X

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-24 18:32
VLAI
Details

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

ALSA: usb-audio: Bound MIDI endpoint descriptor scans

snd_usbmidi_get_ms_info() validates the internal MIDIStreaming endpoint descriptor size before using baAssocJackID[], but the descriptor walker can still return a class-specific endpoint descriptor whose bLength exceeds the remaining bytes in the endpoint-extra scan.

That leaves later flexible-array reads bounded by bLength, but not by the remaining bytes in the endpoint-extra scan.

Stop walking when bLength is zero or extends past the remaining endpoint-extra scan.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-52963"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:06Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Bound MIDI endpoint descriptor scans\n\nsnd_usbmidi_get_ms_info() validates the internal MIDIStreaming endpoint\ndescriptor size before using baAssocJackID[], but the descriptor walker can\nstill return a class-specific endpoint descriptor whose bLength exceeds the\nremaining bytes in the endpoint-extra scan.\n\nThat leaves later flexible-array reads bounded by bLength, but not by the\nremaining bytes in the endpoint-extra scan.\n\nStop walking when bLength is zero or\nextends past the remaining endpoint-extra scan.",
  "id": "GHSA-m4vx-wp7v-hx3x",
  "modified": "2026-06-24T18:32:41Z",
  "published": "2026-06-24T18:32:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52963"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09141583bd97f4bbd7358e29fd138fe798467cdb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/728ab0c72e49ca27185067984cd565425eb69b2e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0226560540c16717efcceaf15c862cf115b01d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c59159ce10e75b568cd0d4b29efcb0fb0ddecc94"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c65b137d351e21cbc5630e73ef0eb1e1d75f5b20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6854daa67be623860f4e1873fd3d3c275aba4ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2f1260a056eb3215c13c48c5378f3e4112dc3af"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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