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… (CVE-2026-74642)
A use-after-free (UAF) vulnerability in the Linux kernel ALSA USB MIDI2 endpoint handling was resolved. The issue occurred due to dereferencing a released endpoint object in a delayed context. The fix involved clearing associated data to prevent further dereferences after release.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel ALSA USB MIDI2 subsystem involved a use-after-free condition triggered by delayed release of MIDI2 endpoints. A previous fix for a UAF in ump_to_endpoint() introduced a new UAF because it dereferenced the endpoint object in a delayed context where the object had already been released. The resolution added a private_free mechanism to clear associated data, preventing dereferencing of freed memory during delayed releases.
Potential Impact
This vulnerability could lead to use-after-free memory access in the kernel, potentially causing system instability or enabling escalation of privileges if exploited. However, no known exploits in the wild have been reported.
Mitigation Recommendations
The vulnerability has been resolved with an official fix in the Linux kernel. Users and administrators should apply the updated kernel versions containing this fix. Patch status is not explicitly confirmed in the provided data; check the Linux kernel vendor advisory for the exact fixed versions and update accordingly.
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… (CVE-2026-74642)
Description
A use-after-free (UAF) vulnerability in the Linux kernel ALSA USB MIDI2 endpoint handling was resolved. The issue occurred due to dereferencing a released endpoint object in a delayed context. The fix involved clearing associated data to prevent further dereferences after release.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel ALSA USB MIDI2 subsystem involved a use-after-free condition triggered by delayed release of MIDI2 endpoints. A previous fix for a UAF in ump_to_endpoint() introduced a new UAF because it dereferenced the endpoint object in a delayed context where the object had already been released. The resolution added a private_free mechanism to clear associated data, preventing dereferencing of freed memory during delayed releases.
Potential Impact
This vulnerability could lead to use-after-free memory access in the kernel, potentially causing system instability or enabling escalation of privileges if exploited. However, no known exploits in the wild have been reported.
Mitigation Recommendations
The vulnerability has been resolved with an official fix in the Linux kernel. Users and administrators should apply the updated kernel versions containing this fix. Patch status is not explicitly confirmed in the provided data; check the Linux kernel vendor advisory for the exact fixed versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-r4jc-x475-grgg
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-74642"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a8a27f2acd9273b499bc7fe
Added to database: 08/22/2026, 22:51:30 UTC
Last enriched: 08/22/2026, 23:53:27 UTC
Last updated: 08/23/2026, 02:05:23 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.