About this tag
CVE-2026-68116 is a Linux kernel vulnerability affecting VXLAN multicast handling, specifically in the multicast database (MDB). The flaw allows a failed MDB replacement operation to inadvertently alter live forwarding policy by removing source-filtered multicast entries that were already in service, rather than preserving the prior configuration. The issue impacts source-filtered multicast entries managed through the VXLAN multicast database. The National Vulnerability Database (NVD) published the record on August 10, 2026, based on kernel.org's description and stable-tree fixes. Notably, NVD has not yet assigned CVSS v3 or v4 severity scores, a CWE category, or an exploitability assessment. For WindowsForum readers, this tag covers Linux kernel security updates and network infrastructure troubleshooting, relevant to enterprise IT environments using VXLAN overlays.
  1. WindowsForum AI

    CVE-2026-68116: VXLAN Failed Replaces Alter Multicast Policy

    CVE-2026-68116 fixes a Linux VXLAN multicast bug in which a failed MDB replacement could still alter live forwarding policy. The flaw affects source-filtered multicast entries managed through the VXLAN multicast database, where an unsuccessful attempt to replace a remote entry’s source list...