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

  - ipv6: addrconf: bail out of dad_failure when state is no longer POSTDAD addrconf_dad_failure() transitions     ifp->state from DAD to POSTDAD via addrconf_dad_end(), which drops ifp->lock on return. The lock is re-     acquired after net_info_ratelimited(). A concurrent ipv6_del_addr() can take the lock in that window, set     ifp->state to DEAD and run list_del_rcu(&ifp->if_list). addrconf_dad_failure() then overwrites DEAD with     ERRDAD at errdad: and schedules a new dad_work. The work calls ipv6_del_addr() again, hitting the already-     poisoned list entry: general protection fault: 0000 [#1] SMP NOPTI CPU: 4 PID: 217 Comm: kworker/4:1     Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:ipv6_del_addr+0xe9/0x280 RAX: dead000000000122 Call     Trace: addrconf_dad_stop+0x113/0x140 addrconf_dad_work+0x28c/0x430 process_one_work+0x1eb/0x3b0     worker_thread+0x4d/0x400 kthread+0x104/0x140 ret_from_fork+0x35/0x40 Fold the addrconf_dad_end() logic     into addrconf_dad_failure() under a single ifp->lock critical section. The STABLE_PRIVACY branch     temporarily drops ifp->lock around address regeneration, so at lock_errdad: verify the state is still     POSTDAD before transitioning to ERRDAD; bail out otherwise to avoid overwriting a state set by another     path while the lock was released. (CVE-2026-74398)

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

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-74398

critical Nessus Plugin ID 337575

Version 1.4

Version 1.2

Version 1.1

Version 1.4 Aug 21, 2026, 7:41 AM CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:C") CVSSv2 severity (based on CVE-2026-74398, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202608210741
Version 1.2 Aug 19, 2026, 11:27 AM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") CVSSv2 severity (based on CVE-2026-74398, severity increased from "Medium" to "High") Plugin Feed: 202608191127
Version 1.1 Aug 19, 2026, 6:09 AM New Plugin Feed: 202608190609