CVE-2026-35092

Description

A flaw was found in Corosync. An integer overflow vulnerability in Corosync's 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.

CVSS Vector

References

• https://access.redhat.com/security/cve/CVE-2026-35092
• https://bugzilla.redhat.com/show_bug.cgi?id=2453169
• https://bugzilla.redhat.com/show_bug.cgi?id=2453814