Incorrect Check of Function Return Value Affecting corosynclib-devel package, versions <0:3.1.10-1.el9_8.1


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
1.09% (65th percentile)

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  • Snyk IDSNYK-ALMALINUX9-COROSYNCLIBDEVEL-16568556
  • published9 May 2026
  • disclosed19 May 2026

Introduced: 9 May 2026

CVE-2026-35091  (opens in a new tab)
CWE-253  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 corosynclib-devel to version 0:3.1.10-1.el9_8.1 or higher.
This issue was patched in ALSA-2026:19200.

NVD Description

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

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

CVSS Base Scores

version 3.1