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

  - ipv6: mcast: use copy-on-write RCU updates in ip6_mc_source() pmc->sflist is read locklessly under     rcu_read_lock() by inet6_mc_check() during packet reception in the UDP and RAW multicast receive paths.
    ip6_mc_source() mutated psl->sl_addr and psl->sl_count in-place when adding or removing a source filter.
    Additionally, when expanding the filter buffer, newpsl was published via rcu_assign_pointer() before     writing the new source into the array. Because 16-byte struct in6_addr writes are not atomic and array     shifting is not synchronized with RCU readers, concurrent readers in inet6_mc_check() could read torn IPv6     addresses or observe duplicated/missed source entries. Fix this by switching ip6_mc_source() to copy-on-     write RCU updates: allocate and fully populate newpsl before publishing it via rcu_assign_pointer(), and     reclaim the old filter via kfree_rcu(), matching ip6_mc_msfilter(). Also remove the now unused IP6_SFBLOCK     macro. (CVE-2026-98101)

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

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-98101

high Nessus Plugin ID 350551

Version 1.4

Version 1.3

Version 1.1

Version 1.4 Oct 6, 2026, 8:42 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202610060842
Version 1.3 Oct 2, 2026, 6:07 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202610021807
Version 1.1 Sep 26, 2026, 2:30 AM New Plugin Feed: 202609260230