CVE-2025-21835

usb: gadget: f_midi: fix MIDI Streaming descriptor lengths

State: Published
Severity: Not scored
Published: Mar 7, 2025
Updated: Oct 15, 2026
Reserved: Dec 29, 2024

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	c8933c3f79568263c90a46f06cf80419e6c63c97 to before 3a983390d14e8498f303fc5cb23ab7d696b815dbAffected c8933c3f79568263c90a46f06cf80419e6c63c97 to before 9f36a89dcb78cb7e37f487b04a16396ac18c0636Affected c8933c3f79568263c90a46f06cf80419e6c63c97 to before d8e86700c8a8cf415e300a0921acd6a8f9b494f8Affected c8933c3f79568263c90a46f06cf80419e6c63c97 to before 9f6860a9c11301b052225ca8825f8d2b1a5825bfAffected c8933c3f79568263c90a46f06cf80419e6c63c97 to before 6ae6dee9f005a2f3b739b85abb6f14a0935699e0Affected c8933c3f79568263c90a46f06cf80419e6c63c97 to before 6b16761a928796e4b49e89a0b1ac284155172726Affected c8933c3f79568263c90a46f06cf80419e6c63c97 to before a2d0694e1f111379c1efdf439dadd3cfd959fe9dAffected c8933c3f79568263c90a46f06cf80419e6c63c97 to before da1668997052ed1cb00322e1f3b63702615c9429Affected
LinuxLinux	3.2Affected before 3.2Not affected 5.4.291 through 5.4.Not affected 5.10.235 through 5.10.Not affected 5.15.179 through 5.15.Not affected 6.1.129 through 6.1.Not affected 6.6.79 through 6.6.Not affected 6.12.16 through 6.12.Not affected 6.13.4 through 6.13.*Not affected 6.14 and laterNot affected

Product

Versions

LinuxLinux

c8933c3f79568263c90a46f06cf80419e6c63c97 to before 3a983390d14e8498f303fc5cb23ab7d696b815dbAffected
c8933c3f79568263c90a46f06cf80419e6c63c97 to before 9f36a89dcb78cb7e37f487b04a16396ac18c0636Affected
c8933c3f79568263c90a46f06cf80419e6c63c97 to before d8e86700c8a8cf415e300a0921acd6a8f9b494f8Affected
c8933c3f79568263c90a46f06cf80419e6c63c97 to before 9f6860a9c11301b052225ca8825f8d2b1a5825bfAffected
c8933c3f79568263c90a46f06cf80419e6c63c97 to before 6ae6dee9f005a2f3b739b85abb6f14a0935699e0Affected
c8933c3f79568263c90a46f06cf80419e6c63c97 to before 6b16761a928796e4b49e89a0b1ac284155172726Affected
c8933c3f79568263c90a46f06cf80419e6c63c97 to before a2d0694e1f111379c1efdf439dadd3cfd959fe9dAffected
c8933c3f79568263c90a46f06cf80419e6c63c97 to before da1668997052ed1cb00322e1f3b63702615c9429Affected

LinuxLinux

3.2Affected
before 3.2Not affected
5.4.291 through 5.4.*Not affected
5.10.235 through 5.10.*Not affected
5.15.179 through 5.15.*Not affected
6.1.129 through 6.1.*Not affected
6.6.79 through 6.6.*Not affected
6.12.16 through 6.12.*Not affected
6.13.4 through 6.13.*Not affected
6.14 and laterNot affected

References

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