CVE-2025-21835

MEDIUM

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.

CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 3/7/2025Modified: 10/15/2026

Related Intelligence (1)

CRITICALVulnerability

Siemens SIMATIC S7-1500 TM MFP

<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-295-16.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP V1.1.1. Siemens is preparing fixes and recommends specific mitigations for products where fixes are not or not yet avail

CVE-2023-52927CVE-2023-53292
CISA Advisories

References (12)

https://git.kernel.org/stable/c/3a983390d14e8498f303fc5cb23ab7d696b815dbPatchhttps://git.kernel.org/stable/c/6ae6dee9f005a2f3b739b85abb6f14a0935699e0Patchhttps://git.kernel.org/stable/c/6b16761a928796e4b49e89a0b1ac284155172726Patchhttps://git.kernel.org/stable/c/9f36a89dcb78cb7e37f487b04a16396ac18c0636Patchhttps://git.kernel.org/stable/c/9f6860a9c11301b052225ca8825f8d2b1a5825bfPatchhttps://git.kernel.org/stable/c/a2d0694e1f111379c1efdf439dadd3cfd959fe9dPatchhttps://git.kernel.org/stable/c/d8e86700c8a8cf415e300a0921acd6a8f9b494f8Patchhttps://git.kernel.org/stable/c/da1668997052ed1cb00322e1f3b63702615c9429Patchhttps://lists.debian.org/debian-lts-announce/2025/03/msg00028.htmlhttps://lists.debian.org/debian-lts-announce/2025/05/msg00030.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-265688.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-784472.html