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usb: gadget: f_midi: fix MIDI Streaming descriptor lengths

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_midi: fix MIDI Streaming descriptor lengths While the MIDI jacks are configured correctly, and the MIDIStreaming endpoint descriptors are filled with the correct information, bNumEmbMIDIJack and bLength are set incorrectly in these descriptors. This does not matter when the numbers of in and out ports are equal, but when they differ the host will receive broken descriptors with uninitialized stack memory leaking into the descriptor for whichever value is smaller. The precise meaning of "in" and "out" in the port counts is not clearly defined and can be confusing. But elsewhere the driver consistently uses this to match the USB meaning of IN and OUT viewed from the host, so that "in" ports send data to the host and "out" ports receive data from it.

Announced Source revision 1
Original source ↗

CVE-2025-21835

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2025-21835

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "c8933c3f79568263c90a46f06cf80419e6c63c97",
        "lessThan": "3a983390d14e8498f303fc5cb23ab7d696b815db",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8933c3f79568263c90a46f06cf80419e6c63c97",
        "lessThan": "9f36a89dcb78cb7e37f487b04a16396ac18c0636",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8933c3f79568263c90a46f06cf80419e6c63c97",
        "lessThan": "d8e86700c8a8cf415e300a0921acd6a8f9b494f8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8933c3f79568263c90a46f06cf80419e6c63c97",
        "lessThan": "9f6860a9c11301b052225ca8825f8d2b1a5825bf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8933c3f79568263c90a46f06cf80419e6c63c97",
        "lessThan": "6ae6dee9f005a2f3b739b85abb6f14a0935699e0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8933c3f79568263c90a46f06cf80419e6c63c97",
        "lessThan": "6b16761a928796e4b49e89a0b1ac284155172726",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8933c3f79568263c90a46f06cf80419e6c63c97",
        "lessThan": "a2d0694e1f111379c1efdf439dadd3cfd959fe9d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8933c3f79568263c90a46f06cf80419e6c63c97",
        "lessThan": "da1668997052ed1cb00322e1f3b63702615c9429",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/usb/gadget/function/f_midi.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.2"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.4.291",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.235",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.179",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.129",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.79",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.16",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.13.4",
        "versionType": "semver",
        "lessThanOrEqual": "6.13.*"
      },
      {
        "status": "unaffected",
        "version": "6.14",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/usb/gadget/function/f_midi.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-21835

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#26953 · Revision 1
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Publisher date
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