Security Advisory
CVE-2026-35092
CVE vulnerability detail — eXtreme Datacenter Security Operations
Description
A flaw was found in Corosync. An integer overflow vulnerability in Corosyncs join message sanity validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets. This can cause the service to crash, leading to a denial of service. This vulnerability specifically affects Corosync deployments configured to use totemudp/totemudpu mode.