Medium 5.5Published Jun 24, 2026

CVE-2026-52964ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans

Updated under an hour ago (Oct 27, 2026, 7:40 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans The USB MIDI 2.0 endpoint parser has the same descriptor walking pattern as the legacy MIDI parser. It validates bLength against bNumGrpTrmBlock before reading baAssoGrpTrmBlkID[], but not against the remaining bytes in the endpoint-extra scan. A malformed device can therefore make later baAssoGrpTrmBlkID[] reads consume bytes past the walked descriptor. Reject zero-length and overlong descriptors while walking endpoint extras.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from ff49d1df79aef7580fe3ac99d17c3f886655d080 before fafc97bd01e4c737eaeafadfdadb1af4bbfa7307; from ff49d1df79aef7580fe3ac99d17c3f886655d080 before a310b4bebda5e4a1b26520c0cc5145ccd6d617e2; from ff49d1df79aef7580fe3ac99d17c3f886655d080 before f9c184a83574549a36ea69b755f650e57d164c78; from ff49d1df79aef7580fe3ac99d17c3f886655d080 before 17e76b19de1aff5ff4de64d269290bd1b07a01d3; from ff49d1df79aef7580fe3ac99d17c3f886655d080 before 918be519c7876329e1b6e2ea1c59f0b75e792dca	CNA record
linux linux_kernel linux:linux_kernel	from 6.5 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10; 7.1; 7.1; 7.1	NVD

References

References

https://git.kernel.org/stable/c/fafc97bd01e4c737eaeafadfdadb1af4bbfa7307	patch
https://git.kernel.org/stable/c/a310b4bebda5e4a1b26520c0cc5145ccd6d617e2	patch
https://git.kernel.org/stable/c/f9c184a83574549a36ea69b755f650e57d164c78	patch
https://git.kernel.org/stable/c/17e76b19de1aff5ff4de64d269290bd1b07a01d3	patch
https://git.kernel.org/stable/c/918be519c7876329e1b6e2ea1c59f0b75e792dca	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.