CVE-2026-43436

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6c0a2078134aba6a77291554035304df9e16b85c < b014cc945baba75816cda0cf8934be87c9ed4947affected
LinuxLinux6c0a2078134aba6a77291554035304df9e16b85c < c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34baaffected
LinuxLinux6c0a2078134aba6a77291554035304df9e16b85c < b267255c15d2a5b90c4e926146aa155e5161e264affected
LinuxLinux6c0a2078134aba6a77291554035304df9e16b85c < 3d542cf3c4c854cdf5d58049771f68926b9eb2b9affected
LinuxLinux6c0a2078134aba6a77291554035304df9e16b85c < 3d4f23885e4b90347c9a1d779af6e79a99b5172aaffected
LinuxLinux6c0a2078134aba6a77291554035304df9e16b85c < df1d8abf36ca3681c21a6809eaa9a1e01ef897a6affected
LinuxLinux5.14affected
LinuxLinux0 < 5.14unaffected
LinuxLinux6.1.167 <= 6.1.*unaffected
LinuxLinux6.6.130 <= 6.6.*unaffected
LinuxLinux6.12.78 <= 6.12.*unaffected
LinuxLinux6.18.19 <= 6.18.*unaffected
LinuxLinux6.19.9 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References