Integer Overflow or Wraparound Affecting corosynclib package, versions <0:3.1.9-2.el9_7.1


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.99% (58th percentile)

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  • Snyk IDSNYK-CENTOS9-COROSYNCLIB-15917459
  • published6 Apr 2026
  • disclosed1 Apr 2026

Introduced: 1 Apr 2026

CVE-2026-35092  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Centos:9 corosynclib to version 0:3.1.9-2.el9_7.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream corosynclib package and not the corosynclib package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets. This can cause the service to crash, leading to a denial of service. This vulnerability specifically affects Corosync deployments configured to use totemudp/totemudpu mode.

CVSS Base Scores

version 3.1