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.

An update of the linux package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-43436)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
321210	Photon OS 5.0: Linux PHSA-2026-5.0-0837	Nessus	PhotonOS Local Security Checks	high
313507	Photon OS 5.0: Linux PHSA-2026-5.0-0842	Nessus	PhotonOS Local Security Checks	high
313353	Linux Distros Unpatched Vulnerability : CVE-2026-43436	Nessus	Misc.	medium

Detections

Analytics

CVE-2026-43436

medium

Tenable Plugins

high

high

medium