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corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet

🗓️ 06 May 2026 16:26:06Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 2 Views

Corosync exposes denial of service and information disclosure via crafted UDP packets in totemudp mode.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.6ppc64lecorosync0:3.1.5-2.el8_6.1corosync-0:3.1.5-2.el8_6.1.ppc64le.rpm
Red Hat Enterprise Linux8.6x86_64corosync0:3.1.5-2.el8_6.1corosync-0:3.1.5-2.el8_6.1.x86_64.rpm
Red Hat Enterprise Linux8.6aarch64corosync-debuginfo0:3.1.5-2.el8_6.1corosync-debuginfo-0:3.1.5-2.el8_6.1.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lecorosync-debuginfo0:3.1.5-2.el8_6.1corosync-debuginfo-0:3.1.5-2.el8_6.1.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xcorosync-debuginfo0:3.1.5-2.el8_6.1corosync-debuginfo-0:3.1.5-2.el8_6.1.s390x.rpm
Red Hat Enterprise Linux8.6x86_64corosync-debuginfo0:3.1.5-2.el8_6.1corosync-debuginfo-0:3.1.5-2.el8_6.1.x86_64.rpm
Red Hat Enterprise Linux8.6anycorosync-debuginfo0:3.1.5-2.el8_6.1.i686corosync-debuginfo-0:3.1.5-2.el8_6.1.i686.noarch.rpm
Red Hat Enterprise Linux8.6aarch64corosync-debugsource0:3.1.5-2.el8_6.1corosync-debugsource-0:3.1.5-2.el8_6.1.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lecorosync-debugsource0:3.1.5-2.el8_6.1corosync-debugsource-0:3.1.5-2.el8_6.1.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xcorosync-debugsource0:3.1.5-2.el8_6.1corosync-debugsource-0:3.1.5-2.el8_6.1.s390x.rpm
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29 May 2026 16:21Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.18.2
EPSS0.00284
SSVC
2