CVE-2026-52964 (GCVE-0-2026-52964)
Vulnerability from cvelistv5
Published
2026-06-24 16:28
Modified
2026-06-24 16:28
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans The USB MIDI 2.0 endpoint parser has the same descriptor walking pattern as the legacy MIDI parser. It validates bLength against bNumGrpTrmBlock before reading baAssoGrpTrmBlkID[], but not against the remaining bytes in the endpoint-extra scan. A malformed device can therefore make later baAssoGrpTrmBlkID[] reads consume bytes past the walked descriptor. Reject zero-length and overlong descriptors while walking endpoint extras.
References
Impacted products
Vendor Product Version
Linux Linux Version: ff49d1df79aef7580fe3ac99d17c3f886655d080
Version: ff49d1df79aef7580fe3ac99d17c3f886655d080
Version: ff49d1df79aef7580fe3ac99d17c3f886655d080
Version: ff49d1df79aef7580fe3ac99d17c3f886655d080
Version: ff49d1df79aef7580fe3ac99d17c3f886655d080
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/midi2.c"
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          "vendor": "Linux",
          "versions": [
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans\n\nThe USB MIDI 2.0 endpoint parser has the same descriptor walking\npattern as the legacy MIDI parser. It validates bLength against\nbNumGrpTrmBlock before reading baAssoGrpTrmBlkID[], but not against the\nremaining bytes in the endpoint-extra scan.\n\nA malformed device can therefore make later baAssoGrpTrmBlkID[] reads\nconsume bytes past the walked descriptor.\n\nReject zero-length and overlong descriptors while walking endpoint\nextras."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:28:44.345Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fafc97bd01e4c737eaeafadfdadb1af4bbfa7307"
        },
        {
          "url": "https://git.kernel.org/stable/c/a310b4bebda5e4a1b26520c0cc5145ccd6d617e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9c184a83574549a36ea69b755f650e57d164c78"
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        {
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        {
          "url": "https://git.kernel.org/stable/c/918be519c7876329e1b6e2ea1c59f0b75e792dca"
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      ],
      "title": "ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-52964",
    "datePublished": "2026-06-24T16:28:44.345Z",
    "dateReserved": "2026-06-09T07:44:35.374Z",
    "dateUpdated": "2026-06-24T16:28:44.345Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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