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: cgroup: Avoid iteration of dying tasks     with zero refcount The commit 260fbcb92bbea (cgroup: Move dying_tasks cleanup from cgroup_task_release()     to cgroup_task_free()) extended the lifetime of tasks on the dying_tasks list. The iterators have     provision to go through dying_tasks because of dying threadgroup leaders or explicit     CSS_TASK_ITER_WITH_DEAD, however, it was expected that such tasks can obtain a new reference (that is     possible before cgroup_task_release()/put_task_struct_rcu_user()). The tasks after cgroup_task_release()     and before cgroup_task_free() are subject to race when they may or may not have ->usage count > 0. The     race window is between css_task_iter_next() invocations when css_set_lock is released and we may arrive at     a new ->task_pos. The iterator should not attempt to resurrect tasks whose ->usage count dropped to zero.
    (When that happens, __put_task_struct_rcu_cb() is already imminent and the returned task_struct would     could be used after free.) As for the fix, we cannot simply check the signal->live count of a task on the     dying list because that won't distinguish regular zombies waiting to be reaped from RCU remnant tasks that     are going to be free'd. Therefore add an extra check to rule out ->usage==0 tasks from any iteration. The     repeat: loop in css_task_iter_advance() doesn't consider ->usage count, so add a new loop to     css_task_iter_next() to skip de-used tasks on the dying_list. Rough illustration of the possible race R     (reader of cgroup.procs) T (thread) L (group leader) ---------------------------------
    -------------------------------- -------------------------------- L exits, signal->live > 0     cgroup_task_dead(L) css_set_skip_task_iters() // skips only cset->tasks list_add_tail(&L->cg_list,     &cset->dying_tasks) css_task_iter_next() take css_set_lock css_task_iter_advance() leader && signal->live     != 0 => it->task_pos = &L->cg_list release css_set_lock T exits --signal->live == 0 cgroup_task_dead(T) //     css_set_lock release_task(T) cgroup_task_release(T) release_task(L) // zap_leader cgroup_task_release(L)     put_task_struct_rcu_user(L) ...RCU... put_task_struct(L) L->usage = 0 /* L still on dying_tasks */     ...RCU... __put_task_struct(L) css_task_iter_next() // another iteration take css_set_lock it->task_pos =     &L->cg_list get_task_struct(L) => addition on 0 drop css_set_lock cgroup_task_free(L)     css_set_skip_task_iters() // dying skip comes too late free_task(L) cgroup_procs_show() task_pid_vnr(L)     (CVE-2026-98163)

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Linux Distros Unpatched Vulnerability : CVE-2026-98163

high Nessus Plugin ID 369312

Version 1.5

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.5 Nov 12, 2026, 7:08 AM CVSS metrics ("CVSSv2 score" set to 4.7. "CVSSv2 vector" set to "CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202611120708
Version 1.4 Nov 5, 2026, 5:43 PM CVSS metrics ("CVSSv2 score" set to 6.0. "CVSSv2 vector" set to "CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C") Plugin Feed: 202611051743
Version 1.3 Nov 4, 2026, 12:13 PM CVSS metrics ("CVSSv2 score" set to 4.7. "CVSSv2 vector" set to "CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202611041213
Version 1.2 Oct 22, 2026, 10:08 AM CVSS metrics ("CVSSv2 score" set to 6.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C") Plugin Feed: 202610221008
Version 1.1 Oct 22, 2026, 12:02 AM New Plugin Feed: 202610220002