RHSA-2026:14205: Moderate: corosync security update

Published May 6, 2026
·
Updated

Moderate: corosync security update

Other sources

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.

Red Hat

Affected Software

52 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux High Availability (for ARM 64) - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux High Availability for Power, little endian - 4 years of updates
Red Hat Red Hat Enterprise Linux High Availability for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux High Availability (for IBM z Systems) - Extended Update Support
Red Hat Red Hat Enterprise Linux High Availability for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux High Availability for IBM z Systems - 4 years of updates
redhat/corosync<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-debugsource<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-vqsim-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-debugsource<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-vqsim-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-debugsource<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-vqsim-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib-debuginfo<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-debuginfo<3.1.9-1.el10_0.2.aa
3.1.9-1.el10_0.2.aa
redhat/corosync-debugsource<3.1.9-1.el10_0.2.aa
3.1.9-1.el10_0.2.aa
redhat/corosync-vqsim-debuginfo<3.1.9-1.el10_0.2.aa
3.1.9-1.el10_0.2.aa
redhat/corosynclib<3.1.9-1.el10_0.2.aa
3.1.9-1.el10_0.2.aa
redhat/corosynclib-debuginfo<3.1.9-1.el10_0.2.aa
3.1.9-1.el10_0.2.aa
redhat/corosync<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib-devel<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib-devel<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosynclib-devel<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync<3.1.9-1.el10_0.2.aa
3.1.9-1.el10_0.2.aa
redhat/corosynclib-devel<3.1.9-1.el10_0.2.aa
3.1.9-1.el10_0.2.aa
redhat/corosync-vqsim<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-vqsim<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-vqsim<3.1.9-1.el10_0.2
3.1.9-1.el10_0.2
redhat/corosync-vqsim<3.1.9-1.el10_0.2.aa
3.1.9-1.el10_0.2.aa

Remediation

Event History

May 6, 2026
Advisory Published
via Red Hat·03:32 PM
Data Sourced
via Red Hat·03:32 PM
DescriptionSeverityAffected Software
May 13, 2026
Advisory Published
via Red Hat·02:12 AM
Data Sourced
via Red Hat·02:12 AM
Remedy

Frequently Asked Questions

1

What is the severity of RHSA-2026:14205?

The severity of RHSA-2026:14205 is classified as Moderate.

2

What type of vulnerabilities are addressed in RHSA-2026:14205?

RHSA-2026:14205 addresses vulnerabilities related to Denial of Service and information disclosure via crafted UDP packets.

3

How do I fix RHSA-2026:14205?

To fix RHSA-2026:14205, you should update corosync to version 3.1.9-1.el10_0.2.

4

Which products are affected by RHSA-2026:14205?

RHSA-2026:14205 affects various Red Hat Enterprise Linux products including those for x86_64, Power, ARM 64, and IBM z Systems.

5

What is the main purpose of the corosync package in relation to RHSA-2026:14205?

The corosync package provides the Corosync Cluster Engine and C APIs for Red Hat Enterprise Linux cluster software.

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