CVE-2026-52964

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-06-24 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

Description

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.

Affected Software (10)

VendorProductVersion
Linux Linux ff49d1df79aef7580fe3ac99d17c3f886655d080 < fafc97bd01e4c737eaeafadfdadb1af4bbfa7307
Linux Linux ff49d1df79aef7580fe3ac99d17c3f886655d080 < a310b4bebda5e4a1b26520c0cc5145ccd6d617e2
Linux Linux ff49d1df79aef7580fe3ac99d17c3f886655d080 < f9c184a83574549a36ea69b755f650e57d164c78
Linux Linux ff49d1df79aef7580fe3ac99d17c3f886655d080 < 17e76b19de1aff5ff4de64d269290bd1b07a01d3
Linux Linux ff49d1df79aef7580fe3ac99d17c3f886655d080 < 918be519c7876329e1b6e2ea1c59f0b75e792dca
Linux Linux 6.5
linux linux_kernel 6.5 – 6.6.141
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.16%
Raw Score 0.001620
Percentile 5.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00162
2026-11-12
0.00162
2026-11-10
0.00162
2026-11-09
0.00162
2026-11-08
0.00162
2026-11-07
0.00162
2026-11-06
0.00162

Intelligence Sources

mitre ref →
nvd ref →