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

  - In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ncm: Fix atomic context     locking issue The ncm_set_alt function was holding a mutex to protect against races with configfs, which     invokes the might-sleep function inside an atomic context. Remove the struct net_device pointer from the     f_ncm_opts structure to eliminate the contention. The connection state is now managed by a new boolean     flag to preserve the use-after-free fix from commit 6334b8e4553c (usb: gadget: f_ncm: Fix UAF ncm object     at re-bind after usb ep transport error). BUG: sleeping function called from invalid context Call Trace:
    dump_stack_lvl+0x83/0xc0 dump_stack+0x14/0x16 __might_resched+0x389/0x4c0 __might_sleep+0x8e/0x100 ...
    __mutex_lock+0x6f/0x1740 ... ncm_set_alt+0x209/0xa40 set_config+0x6b6/0xb40 composite_setup+0x734/0x2b40     ... (CVE-2026-43423)

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

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-43423

high Nessus Plugin ID 313435

Version 1.4

Version 1.2

Version 1.1

Version 1.4 May 25, 2026, 10:30 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605252230
Version 1.2 May 20, 2026, 10:33 PM CVSS metrics ("CVSSv2 score" set to 6.9) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C") CVSS metrics ("CVSSv3 score" set to 7.1) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H") CVSSv2 severity (based on CVE-2026-43423, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202605202233
Version 1.1 May 9, 2026, 8:04 AM New Plugin Feed: 202605090804