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Corosync Security Update for Linux Clustering Software

published 6 months ago

Summary

A security update is available for Corosync, a Linux clustering software. This update addresses a potential security risk that could allow an attacker to disrupt the operation of a clustered system. To protect your systems, apply the latest Corosync security update.

What to do

Update redhat corosync to version 0:3.1.9-2.el9_6.1.
Update redhat corosync-debuginfo to version 0:3.1.9-2.el9_6.1.
Update redhat corosync-debugsource to version 0:3.1.9-2.el9_6.1.
Update redhat corosync-vqsim to version 0:3.1.9-2.el9_6.1.
Update redhat corosync-vqsim-debuginfo to version 0:3.1.9-2.el9_6.1.
Update redhat corosynclib to version 0:3.1.9-2.el9_6.1.
Update redhat corosynclib-debuginfo to version 0:3.1.9-2.el9_6.1.
Update redhat corosynclib-devel to version 0:3.1.9-2.el9_6.1.

Affected software

Ecosystem	Vendor	Product	Affected versions
Red Hat:rhel_eus:9.6::appstream	redhat	corosync	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::appstream	redhat	corosync-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::appstream	redhat	corosync-debugsource	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::appstream	redhat	corosync-vqsim	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::appstream	redhat	corosync-vqsim-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::appstream	redhat	corosynclib	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::appstream	redhat	corosynclib-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::appstream	redhat	corosynclib-devel	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::crb	redhat	corosync	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::crb	redhat	corosync-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::crb	redhat	corosync-debugsource	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::crb	redhat	corosync-vqsim	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::crb	redhat	corosync-vqsim-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::crb	redhat	corosynclib	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::crb	redhat	corosynclib-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::crb	redhat	corosynclib-devel	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::highavailability	redhat	corosync	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::highavailability	redhat	corosync-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::highavailability	redhat	corosync-debugsource	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::highavailability	redhat	corosync-vqsim	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::highavailability	redhat	corosync-vqsim-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::highavailability	redhat	corosynclib	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::highavailability	redhat	corosynclib-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::highavailability	redhat	corosynclib-devel	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::resilientstorage	redhat	corosync	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::resilientstorage	redhat	corosync-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::resilientstorage	redhat	corosync-debugsource	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::resilientstorage	redhat	corosync-vqsim	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::resilientstorage	redhat	corosync-vqsim-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::resilientstorage	redhat	corosynclib	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::resilientstorage	redhat	corosynclib-debuginfo	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1
Red Hat:rhel_eus:9.6::resilientstorage	redhat	corosynclib-devel	< 0:3.1.9-2.el9_6.1 Fix: upgrade to 0:3.1.9-2.el9_6.1

Original advisory text

Red Hat Security Advisory: corosync security update

References

https://access.redhat.com/errata/RHSA-2026:14213 Vendor Advisory
https://access.redhat.com/security/updates/classification/#moderate Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2453813 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2453814 Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_14213.... Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-35091 Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2026-35091 Vendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-35091 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2453169 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-35092 Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2026-35092 Vendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-35092 Vendor Advisory

Fix within

Internet-facing 14 days

Internal 60 days

Not known to be exploited
Can be exploited automatically (estimated)
Gives an attacker partial control (estimated)

Severity

8.2 High

Timeline

Published7 May 2026

Updated21 May 2026

First seen21 May 2026

Sources

RHSA-2026:14213 · OSV

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