ALSA: usb: Fix UAF at delayed release of MIDI2 EPs
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 2 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.00168 6th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.6.152, 6.12.104, 6.18.45 +1Red Hat: 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 6.6.151 to before 6.6.152; 6.12.103 to before 6.12.104; 6.18.44 to before 6.18.45; 7.1.8 to before 7.1.9 | 6.6.152, 6.12.104, 6.18.45, 7.1.9 | Patch available | CNA |
- Linux VendorLinux Affected 6.6.151 to before 6.6.152; 6.12.103 to before 6.12.104; 6.18.44 to before 6.18.45; 7.1.8 to before 7.1.9 Fixed in 6.6.152, 6.12.104, 6.18.45, 7.1.9 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.6.152, 6.12.104, 6.18.45, 7.1.9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-74642
- 2026-10-03 Alias added: GHSA-r4jc-x475-grgg
References
Other 5
- https://git.kernel.org/stable/c/d431941825d357be7d9ab0cb7505e3a1963bd89e
- https://git.kernel.org/stable/c/422d8a02de5ce6a29d616d55e5ead5dec69ac1d7
- https://git.kernel.org/stable/c/d217d723c5e43881b952cdb978477f7f2dc0b6d7
- https://git.kernel.org/stable/c/f9d492a39ebeb1a56f13ec6dd165a18a48dec812
- https://git.kernel.org/stable/c/f8a80cfb68613fb7e6452b66447dbc63f435d140
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Sources
- CVE-2026-74642 · CVE Program
- CVE-2026-74642 · NVD
- FIRST EPSS
- GHSA-r4jc-x475-grgg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-74642 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences