CVE-2026-35091

Published: Apr 1, 2026

Modified: May 29, 2026

PUBLISHED

CVSS v3.1

8.2

HIGH

Description

A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 10	unaffected `0:3.1.9-2.el10_1.1 - < *`
Red Hat	Red Hat Enterprise Linux 10	unaffected `0:3.1.10-1.el10_2.1 - < *`
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	unaffected `0:3.1.9-1.el10_0.2 - < *`
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	unaffected `0:2.4.5-7.el7_9.3 - < *`
Red Hat	Red Hat Enterprise Linux 8	unaffected `0:3.1.8-1.el8_10.1 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	unaffected `0:3.1.0-3.el8_4.2 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	unaffected `0:3.1.0-3.el8_4.2 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	unaffected `0:3.1.5-2.el8_6.1 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service	unaffected `0:3.1.5-2.el8_6.1 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	unaffected `0:3.1.5-2.el8_6.1 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	unaffected `0:3.1.7-1.el8_8.1 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	unaffected `0:3.1.7-1.el8_8.1 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:3.1.9-2.el9_7.1 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:3.1.10-1.el9_8.1 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	unaffected `0:3.1.5-3.el9_0.1 - < *`
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	unaffected `0:3.1.7-1.el9_2.1 - < *`
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	unaffected `0:3.1.8-1.el9_4.1 - < *`
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	unaffected `0:3.1.9-2.el9_6.1 - < *`
Red Hat	Red Hat OpenShift Container Platform 4	All versions