Security update for corosync

Announcement ID: SUSE-SU-2026:21224-1
Release Date: 2026-04-10T11:19:07Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-35091 ( SUSE ): 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-35091 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  • CVE-2026-35091 ( NVD ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  • CVE-2026-35092 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-35092 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2026-35092 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
  • SUSE Linux Enterprise Server for SAP applications 16.0

An update that solves two vulnerabilities can now be installed.

Description:

This update for corosync fixes the following issues:

  • CVE-2026-35091: Denial of Service and information disclosure via crafted UDP packet (bsc#1261299).
  • CVE-2026-35092: Denial of Service via integer overflow in join message validation (bsc#1261300).

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Server for SAP applications 16.0
    zypper in -t patch SUSE-SLES-16.0-521=1

Package List:

  • SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    • corosync-devel-3.1.9-160000.3.1
    • corosync-debugsource-3.1.9-160000.3.1
    • corosync-libs-3.1.9-160000.3.1
    • corosync-libs-debuginfo-3.1.9-160000.3.1
    • corosync-3.1.9-160000.3.1
    • corosync-debuginfo-3.1.9-160000.3.1

References: