FKIE_CVE-2026-52964

Vulnerability from fkie_nvd - Published: 2026-06-24 17:17 - Updated: 2026-06-24 17:17
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17e76b19de1aff5ff4de64d269290bd1b07a01d3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/918be519c7876329e1b6e2ea1c59f0b75e792dca
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a310b4bebda5e4a1b26520c0cc5145ccd6d617e2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9c184a83574549a36ea69b755f650e57d164c78
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fafc97bd01e4c737eaeafadfdadb1af4bbfa7307
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/midi2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fafc97bd01e4c737eaeafadfdadb1af4bbfa7307",
              "status": "affected",
              "version": "ff49d1df79aef7580fe3ac99d17c3f886655d080",
              "versionType": "git"
            },
            {
              "lessThan": "a310b4bebda5e4a1b26520c0cc5145ccd6d617e2",
              "status": "affected",
              "version": "ff49d1df79aef7580fe3ac99d17c3f886655d080",
              "versionType": "git"
            },
            {
              "lessThan": "f9c184a83574549a36ea69b755f650e57d164c78",
              "status": "affected",
              "version": "ff49d1df79aef7580fe3ac99d17c3f886655d080",
              "versionType": "git"
            },
            {
              "lessThan": "17e76b19de1aff5ff4de64d269290bd1b07a01d3",
              "status": "affected",
              "version": "ff49d1df79aef7580fe3ac99d17c3f886655d080",
              "versionType": "git"
            },
            {
              "lessThan": "918be519c7876329e1b6e2ea1c59f0b75e792dca",
              "status": "affected",
              "version": "ff49d1df79aef7580fe3ac99d17c3f886655d080",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/midi2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-52964",
  "lastModified": "2026-06-24T17:17:06.837",
  "metrics": {},
  "published": "2026-06-24T17:17:06.837",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/17e76b19de1aff5ff4de64d269290bd1b07a01d3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/918be519c7876329e1b6e2ea1c59f0b75e792dca"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a310b4bebda5e4a1b26520c0cc5145ccd6d617e2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f9c184a83574549a36ea69b755f650e57d164c78"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fafc97bd01e4c737eaeafadfdadb1af4bbfa7307"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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