RHSA-2026:13673 — Security Advisory
Red Hat Security Advisory: corosync security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · May 5, 2026
Updated · October 3, 2026
Topic
An update for corosync is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The corosync packages provide the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux cluster software.
Security Fix(es):
-
corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)
-
corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.