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RLSA-2026:67873

Security Mirrored from RHSA-2026:67873
Issued at: 2026-09-17
Updated at: 2026-09-17

Advisory content derived from Red Hat RHSA-2026:67873, © Red Hat, Inc., used under CC BY 4.0, with modifications.

Synopsis

Important: corosync security update



Description

The corosync packages provide the Corosync Cluster Engine and C APIs for Rocky Linux cluster software.

Security Fix(es):

* corosync: corosync: heap-based buffer overflow in totempg assembly buffer during fragmented message reassembly (CVE-2026-81665)

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.



Affected products

Rocky Linux 9 aarch64 Rocky Linux 9 ppc64le Rocky Linux 9 s390x

Fixes

2524910

CVEs

CVE-2026-81665

Affected packages

Rocky Linux 9 s390x - ResilientStorage

corosync-0:3.1.10-1.el9_8.2.s390x.rpm corosynclib-devel-0:3.1.10-1.el9_8.2.s390x.rpm

Rocky Linux 9 aarch64 - AppStream

corosync-0:3.1.10-1.el9_8.2.src.rpm corosync-debuginfo-0:3.1.10-1.el9_8.2.aarch64.rpm corosync-debugsource-0:3.1.10-1.el9_8.2.aarch64.rpm corosynclib-0:3.1.10-1.el9_8.2.aarch64.rpm corosynclib-debuginfo-0:3.1.10-1.el9_8.2.aarch64.rpm

Rocky Linux 9 s390x - AppStream

corosync-0:3.1.10-1.el9_8.2.src.rpm corosync-debuginfo-0:3.1.10-1.el9_8.2.s390x.rpm corosync-debugsource-0:3.1.10-1.el9_8.2.s390x.rpm corosynclib-0:3.1.10-1.el9_8.2.s390x.rpm corosynclib-debuginfo-0:3.1.10-1.el9_8.2.s390x.rpm

Rocky Linux 9 ppc64le - AppStream

corosync-0:3.1.10-1.el9_8.2.src.rpm corosync-debuginfo-0:3.1.10-1.el9_8.2.ppc64le.rpm corosync-debugsource-0:3.1.10-1.el9_8.2.ppc64le.rpm corosynclib-0:3.1.10-1.el9_8.2.ppc64le.rpm corosynclib-debuginfo-0:3.1.10-1.el9_8.2.ppc64le.rpm

Rocky Linux 9 ppc64le - ResilientStorage

corosync-0:3.1.10-1.el9_8.2.ppc64le.rpm corosynclib-devel-0:3.1.10-1.el9_8.2.ppc64le.rpm

Rocky Linux 9 aarch64 - CRB

corosync-vqsim-0:3.1.10-1.el9_8.2.aarch64.rpm corosync-vqsim-debuginfo-0:3.1.10-1.el9_8.2.aarch64.rpm

Rocky Linux 9 ppc64le - CRB

corosync-vqsim-0:3.1.10-1.el9_8.2.ppc64le.rpm corosync-vqsim-debuginfo-0:3.1.10-1.el9_8.2.ppc64le.rpm

Rocky Linux 9 s390x - CRB

corosync-vqsim-0:3.1.10-1.el9_8.2.s390x.rpm corosync-vqsim-debuginfo-0:3.1.10-1.el9_8.2.s390x.rpm