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CVE-2026-74642
ALSA: usb: Fix UAF at delayed release of MIDI2 EPs
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb: Fix UAF at delayed release of MIDI2 EPs The recent fix for UAF in ump_to_endpoint() caused another UAF because it tries to dereference the UMP endpoint object, but this might be executed at a delayed context where the endpoint has been already released. Add private_free to clear the associated data for avoiding the further dereference for delayed releases.

Details
INFO

Published Date :

Aug. 22, 2026, 4:16 p.m.

Last Modified :

Aug. 22, 2026, 4:16 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-74642 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Address use-after-free by clearing associated data before delayed release.
  • Apply the Linux kernel patch for ALSA usb.
  • Clear associated data using private_free.
  • Ensure endpoint objects are not dereferenced after release.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-74642.

URL Resource
https://git.kernel.org/stable/c/422d8a02de5ce6a29d616d55e5ead5dec69ac1d7
https://git.kernel.org/stable/c/d217d723c5e43881b952cdb978477f7f2dc0b6d7
https://git.kernel.org/stable/c/d431941825d357be7d9ab0cb7505e3a1963bd89e
https://git.kernel.org/stable/c/f8a80cfb68613fb7e6452b66447dbc63f435d140
https://git.kernel.org/stable/c/f9d492a39ebeb1a56f13ec6dd165a18a48dec812
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-74642 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-74642 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-74642 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-74642 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 22, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '49eccef6d6e1c00dac6fb2e7eb6f9206c33e1c37', 'lessThan': 'd431941825d357be7d9ab0cb7505e3a1963bd89e', 'versionType': 'git'}, {'status': 'affected', 'version': '8a7a33b846d6ba695891b8d0040027cdbad8cd52', 'lessThan': '422d8a02de5ce6a29d616d55e5ead5dec69ac1d7', 'versionType': 'git'}, {'status': 'affected', 'version': 'cc014ebf803174f0e5d15956dfc5a38413c945ae', 'lessThan': 'd217d723c5e43881b952cdb978477f7f2dc0b6d7', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae388c0e1bf727972096f770f82d12e4f748d1b6', 'lessThan': 'f9d492a39ebeb1a56f13ec6dd165a18a48dec812', 'versionType': 'git'}, {'status': 'affected', 'version': '4a05b2d1b4642df74f30b6f54843e825c4a2bfd3', 'lessThan': 'f8a80cfb68613fb7e6452b66447dbc63f435d140', 'versionType': 'git'}], 'programFiles': ['sound/usb/midi2.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.6.151', 'lessThan': '6.6.152', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.103', 'lessThan': '6.12.104', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.18.44', 'lessThan': '6.18.45', 'versionType': 'semver'}, {'status': 'affected', 'version': '7.1.8', 'lessThan': '7.1.9', 'versionType': 'semver'}], 'programFiles': ['sound/usb/midi2.c'], 'defaultStatus': 'unaffected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: ALSA: usb: Fix UAF at delayed release of MIDI2 EPs The recent fix for UAF in ump_to_endpoint() caused another UAF because it tries to dereference the UMP endpoint object, but this might be executed at a delayed context where the endpoint has been already released. Add private_free to clear the associated data for avoiding the further dereference for delayed releases.
    Added Reference https://git.kernel.org/stable/c/422d8a02de5ce6a29d616d55e5ead5dec69ac1d7
    Added Reference https://git.kernel.org/stable/c/d217d723c5e43881b952cdb978477f7f2dc0b6d7
    Added Reference https://git.kernel.org/stable/c/d431941825d357be7d9ab0cb7505e3a1963bd89e
    Added Reference https://git.kernel.org/stable/c/f8a80cfb68613fb7e6452b66447dbc63f435d140
    Added Reference https://git.kernel.org/stable/c/f9d492a39ebeb1a56f13ec6dd165a18a48dec812
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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