ALSA: usb: Fix UAF at delayed release of MIDI2 EPs (CVE-2026-74642) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-74642

ALSA: usb: Fix UAF at delayed release of MIDI2 EPs

Answer in brief

CVE-2026-74642 records a Unknown severity vulnerability in ALSA: usb: Fix UAF at delayed release of MIDI2 EPs. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 22, 2026Updated Aug 22, 2026Source checked Aug 22, 2026First seen by HOL Aug 22, 2026Material review Aug 22, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=49eccef6d6e1c00dac6fb2e7eb6f9206c33e1c37 <d431941825d357be7d9ab0cb7505e3a1963bd89e \|\| >=8a7a33b846d6ba695891b8d0040027cdbad8cd52 <422d8a02de5ce6a29d616d55e5ead5dec69ac1d7 \|\| >=cc014ebf803174f0e5d15956dfc5a38413c945ae <d217d723c5e43881b952cdb978477f7f2dc0b6d7 \|\| >=ae388c0e1bf727972096f770f82d12e4f748d1b6 <f9d492a39ebeb1a56f13ec6dd165a18a48dec812 \|\| >=4a05b2d1b4642df74f30b6f54843e825c4a2bfd3 <f8a80cfb68613fb7e6452b66447dbc63f435d140	d431941825d357be7d9ab0cb7505e3a1963bd89e, 422d8a02de5ce6a29d616d55e5ead5dec69ac1d7, d217d723c5e43881b952cdb978477f7f2dc0b6d7, f9d492a39ebeb1a56f13ec6dd165a18a48dec812, f8a80cfb68613fb7e6452b66447dbc63f435d140
Linux/Linuxgeneric	>=6.6.151 <6.6.152 \|\| >=6.12.103 <6.12.104 \|\| >=6.18.44 <6.18.45 \|\| >=7.1.8 <7.1.9	6.6.152, 6.12.104, 6.18.45, 7.1.9

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to d431941825d357be7d9ab0cb7505e3a1963bd89e; Linux/Linux to 6.6.152 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 22, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.