CVE record · CVE-2026-35092

Corosync: corosync: denial of service via integer overflow in join message validation

CVSS 7.5 HighEPSS 0.010 · 63rd percentile

Published by the CVE Program (CNA: redhat) at 1 Apr 2026, 13:18 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 10 Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.9-2.el10_1.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 10 Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.10-1.el10_2.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.9-1.el10_0.2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.4.5-7.el7_9.3 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.8-1.el8_10.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.0-3.el8_4.2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.0-3.el8_4.2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.5-2.el8_6.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.5-2.el8_6.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.5-2.el8_6.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.7-1.el8_8.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.7-1.el8_8.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.9-2.el9_7.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.10-1.el9_8.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.5-3.el9_0.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.7-1.el9_2.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.8-1.el9_4.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support Package name: corosync https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.1.9-2.el9_6.1 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected

Identifiers: CVE-2026-35092
CNA: redhat
Weakness (CWE): CWE-190
Tags: Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Memory corruption
Published: 1 Apr 2026
Updated: 21 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.010, the 63rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 1 Apr 2026. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2026:13644 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:13657 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:13673 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:14205 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:14210 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:14211 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:14212 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:14213 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:14214 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:14215 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:14216 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:19043 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:19200 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:20916 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2026-35092 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2453169
bugzilla.redhat.com/show_bug.cgi?id=2453814 issue-trackingredhat

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.