Medium 5.5Published May 8, 2026

CVE-2026-43436ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces

Updated under an hour ago (Oct 28, 2026, 6:40 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces The Scarlett2 mixer quirk in USB-audio driver may hit a NULL dereference when a malformed USB descriptor is passed, since it assumes the presence of an endpoint in the parsed interface in scarlett2_find_fc_interface(), as reported by fuzzer. For avoiding the NULL dereference, just add the sanity check of bNumEndpoints and skip the invalid interface.

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: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 6c0a2078134aba6a77291554035304df9e16b85c before b014cc945baba75816cda0cf8934be87c9ed4947; from 6c0a2078134aba6a77291554035304df9e16b85c before c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba; from 6c0a2078134aba6a77291554035304df9e16b85c before b267255c15d2a5b90c4e926146aa155e5161e264; 6c0a2078134aba6a77291554035304df9e16b85c builds before 3d542cf3c4c854cdf5d58049771f68926b9eb2b9; 6c0a2078134aba6a77291554035304df9e16b85c builds before 3d4f23885e4b90347c9a1d779af6e79a99b5172a; from 6c0a2078134aba6a77291554035304df9e16b85c before df1d8abf36ca3681c21a6809eaa9a1e01ef897a6	CNA record
linux linux_kernel linux:linux_kernel	from 5.14 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.19; from 6.19 before 6.19.9; 7.0; 7.0; 7.0	NVD

References

References

https://git.kernel.org/stable/c/b014cc945baba75816cda0cf8934be87c9ed4947	patch
https://git.kernel.org/stable/c/c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba	patch
https://git.kernel.org/stable/c/b267255c15d2a5b90c4e926146aa155e5161e264	patch
https://git.kernel.org/stable/c/3d542cf3c4c854cdf5d58049771f68926b9eb2b9	patch
https://git.kernel.org/stable/c/3d4f23885e4b90347c9a1d779af6e79a99b5172a	patch
https://git.kernel.org/stable/c/df1d8abf36ca3681c21a6809eaa9a1e01ef897a6	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.