SUSE-SU-2026:4202-1: important: Security update for corosync

SLE-SECURITY-UPDATES null at suse.de
Wed Sep 16 17:05:18 UTC 2026 

# Security update for corosync

Announcement ID: SUSE-SU-2026:4202-1  
Release Date: 2026-09-16T08:18:20Z  
Rating: important  
References:

  * bsc#1278738
  * bsc#1278739

  
Cross-References:

  * CVE-2026-81665
  * CVE-2026-81666

  
CVSS scores:

  * CVE-2026-81665 ( SUSE ):  7.7
    CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-81665 ( SUSE ):  7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-81665 ( NVD ):  7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-81666 ( SUSE ):  7.1
    CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-81666 ( SUSE ):  6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-81666 ( NVD ):  6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * openSUSE Leap 15.3
  * SUSE Linux Enterprise High Availability Extension 15 SP4
  * SUSE Linux Enterprise High Availability Extension 15 SP5
  * SUSE Linux Enterprise High Availability Extension 15 SP6
  * SUSE Linux Enterprise High Availability Extension 15 SP7
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7
  * SUSE Manager Proxy 4.3
  * SUSE Manager Retail Branch Server 4.3
  * SUSE Manager Server 4.3

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for corosync fixes the following issues:

  * CVE-2026-81665: heap-based buffer overflow in totempg assembly buffer during
    fragmented message reassembly (bsc#1278738).
  * CVE-2026-81666: integer overflow in check_memb_commit_token_sanity may
    bypass message length validation on 32-bit systems (bsc#1278739).

## 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:

  * openSUSE Leap 15.3  
    zypper in -t patch SUSE-2026-4202

  * SUSE Linux Enterprise High Availability Extension 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP4-2026-4202

  * SUSE Linux Enterprise High Availability Extension 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP5-2026-4202

  * SUSE Linux Enterprise High Availability Extension 15 SP6  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP6-2026-4202

  * SUSE Linux Enterprise High Availability Extension 15 SP7  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP7-2026-4202

## Package List:

  * openSUSE Leap 15.3 (aarch64 i586 ppc64le s390x x86_64)
    * libquorum5-2.4.6-150300.12.19.1
    * libcorosync_common4-2.4.6-150300.12.19.1
    * libtotem_pg5-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qdevice-2.4.6-150300.12.19.1
    * corosync-debugsource-2.4.6-150300.12.19.1
    * libvotequorum8-debuginfo-2.4.6-150300.12.19.1
    * libcorosync_common4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qnetd-debuginfo-2.4.6-150300.12.19.1
    * libcpg4-2.4.6-150300.12.19.1
    * corosync-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-2.4.6-150300.12.19.1
    * corosync-qdevice-debuginfo-2.4.6-150300.12.19.1
    * libvotequorum8-2.4.6-150300.12.19.1
    * corosync-qnetd-2.4.6-150300.12.19.1
    * corosync-testagents-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-debuginfo-2.4.6-150300.12.19.1
    * libcorosync-devel-2.4.6-150300.12.19.1
    * libcpg4-debuginfo-2.4.6-150300.12.19.1
    * libtotem_pg5-2.4.6-150300.12.19.1
    * corosync-2.4.6-150300.12.19.1
    * libsam4-debuginfo-2.4.6-150300.12.19.1
    * corosync-testagents-2.4.6-150300.12.19.1
    * libsam4-2.4.6-150300.12.19.1
    * libquorum5-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-2.4.6-150300.12.19.1
  * openSUSE Leap 15.3 (x86_64)
    * libsam4-32bit-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-32bit-debuginfo-2.4.6-150300.12.19.1
    * libvotequorum8-32bit-2.4.6-150300.12.19.1
    * libcmap4-32bit-2.4.6-150300.12.19.1
    * libcorosync_common4-32bit-2.4.6-150300.12.19.1
    * libtotem_pg5-32bit-2.4.6-150300.12.19.1
    * libvotequorum8-32bit-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-32bit-debuginfo-2.4.6-150300.12.19.1
    * libcpg4-32bit-2.4.6-150300.12.19.1
    * libcorosync_common4-32bit-debuginfo-2.4.6-150300.12.19.1
    * libcpg4-32bit-debuginfo-2.4.6-150300.12.19.1
    * libquorum5-32bit-2.4.6-150300.12.19.1
    * libcfg6-32bit-2.4.6-150300.12.19.1
    * libtotem_pg5-32bit-debuginfo-2.4.6-150300.12.19.1
    * libquorum5-32bit-debuginfo-2.4.6-150300.12.19.1
    * libsam4-32bit-2.4.6-150300.12.19.1
  * openSUSE Leap 15.3 (aarch64_ilp32)
    * libcorosync_common4-64bit-debuginfo-2.4.6-150300.12.19.1
    * libquorum5-64bit-debuginfo-2.4.6-150300.12.19.1
    * libvotequorum8-64bit-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-64bit-2.4.6-150300.12.19.1
    * libcorosync_common4-64bit-2.4.6-150300.12.19.1
    * libcmap4-64bit-2.4.6-150300.12.19.1
    * libcfg6-64bit-debuginfo-2.4.6-150300.12.19.1
    * libcpg4-64bit-2.4.6-150300.12.19.1
    * libquorum5-64bit-2.4.6-150300.12.19.1
    * libsam4-64bit-debuginfo-2.4.6-150300.12.19.1
    * libtotem_pg5-64bit-debuginfo-2.4.6-150300.12.19.1
    * libtotem_pg5-64bit-2.4.6-150300.12.19.1
    * libcpg4-64bit-debuginfo-2.4.6-150300.12.19.1
    * libsam4-64bit-2.4.6-150300.12.19.1
    * libcmap4-64bit-debuginfo-2.4.6-150300.12.19.1
    * libvotequorum8-64bit-2.4.6-150300.12.19.1
  * SUSE Linux Enterprise High Availability Extension 15 SP4 (aarch64 ppc64le
    s390x x86_64)
    * libquorum5-2.4.6-150300.12.19.1
    * libcorosync_common4-2.4.6-150300.12.19.1
    * libtotem_pg5-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qdevice-2.4.6-150300.12.19.1
    * corosync-debugsource-2.4.6-150300.12.19.1
    * libvotequorum8-debuginfo-2.4.6-150300.12.19.1
    * libcorosync_common4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qnetd-debuginfo-2.4.6-150300.12.19.1
    * libcpg4-2.4.6-150300.12.19.1
    * corosync-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-2.4.6-150300.12.19.1
    * corosync-qdevice-debuginfo-2.4.6-150300.12.19.1
    * libvotequorum8-2.4.6-150300.12.19.1
    * corosync-qnetd-2.4.6-150300.12.19.1
    * corosync-testagents-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-debuginfo-2.4.6-150300.12.19.1
    * libcorosync-devel-2.4.6-150300.12.19.1
    * libcpg4-debuginfo-2.4.6-150300.12.19.1
    * libtotem_pg5-2.4.6-150300.12.19.1
    * corosync-2.4.6-150300.12.19.1
    * libsam4-debuginfo-2.4.6-150300.12.19.1
    * corosync-testagents-2.4.6-150300.12.19.1
    * libsam4-2.4.6-150300.12.19.1
    * libquorum5-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-2.4.6-150300.12.19.1
  * SUSE Linux Enterprise High Availability Extension 15 SP5 (aarch64 ppc64le
    s390x x86_64)
    * libquorum5-2.4.6-150300.12.19.1
    * libcorosync_common4-2.4.6-150300.12.19.1
    * libtotem_pg5-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qdevice-2.4.6-150300.12.19.1
    * corosync-debugsource-2.4.6-150300.12.19.1
    * libvotequorum8-debuginfo-2.4.6-150300.12.19.1
    * libcorosync_common4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qnetd-debuginfo-2.4.6-150300.12.19.1
    * libcpg4-2.4.6-150300.12.19.1
    * corosync-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-2.4.6-150300.12.19.1
    * corosync-qdevice-debuginfo-2.4.6-150300.12.19.1
    * libvotequorum8-2.4.6-150300.12.19.1
    * corosync-qnetd-2.4.6-150300.12.19.1
    * corosync-testagents-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-debuginfo-2.4.6-150300.12.19.1
    * libcorosync-devel-2.4.6-150300.12.19.1
    * libcpg4-debuginfo-2.4.6-150300.12.19.1
    * libtotem_pg5-2.4.6-150300.12.19.1
    * corosync-2.4.6-150300.12.19.1
    * libsam4-debuginfo-2.4.6-150300.12.19.1
    * corosync-testagents-2.4.6-150300.12.19.1
    * libsam4-2.4.6-150300.12.19.1
    * libquorum5-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-2.4.6-150300.12.19.1
  * SUSE Linux Enterprise High Availability Extension 15 SP6 (aarch64 ppc64le
    s390x x86_64)
    * libquorum5-2.4.6-150300.12.19.1
    * libcorosync_common4-2.4.6-150300.12.19.1
    * libtotem_pg5-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qdevice-2.4.6-150300.12.19.1
    * corosync-debugsource-2.4.6-150300.12.19.1
    * libvotequorum8-debuginfo-2.4.6-150300.12.19.1
    * libcorosync_common4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qnetd-debuginfo-2.4.6-150300.12.19.1
    * libcpg4-2.4.6-150300.12.19.1
    * corosync-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-2.4.6-150300.12.19.1
    * corosync-qdevice-debuginfo-2.4.6-150300.12.19.1
    * libvotequorum8-2.4.6-150300.12.19.1
    * corosync-qnetd-2.4.6-150300.12.19.1
    * corosync-testagents-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-debuginfo-2.4.6-150300.12.19.1
    * libcorosync-devel-2.4.6-150300.12.19.1
    * libcpg4-debuginfo-2.4.6-150300.12.19.1
    * libtotem_pg5-2.4.6-150300.12.19.1
    * corosync-2.4.6-150300.12.19.1
    * libsam4-debuginfo-2.4.6-150300.12.19.1
    * corosync-testagents-2.4.6-150300.12.19.1
    * libsam4-2.4.6-150300.12.19.1
    * libquorum5-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-2.4.6-150300.12.19.1
  * SUSE Linux Enterprise High Availability Extension 15 SP7 (aarch64 ppc64le
    s390x x86_64)
    * libquorum5-2.4.6-150300.12.19.1
    * libcorosync_common4-2.4.6-150300.12.19.1
    * libtotem_pg5-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qdevice-2.4.6-150300.12.19.1
    * corosync-debugsource-2.4.6-150300.12.19.1
    * libvotequorum8-debuginfo-2.4.6-150300.12.19.1
    * libcorosync_common4-debuginfo-2.4.6-150300.12.19.1
    * corosync-qnetd-debuginfo-2.4.6-150300.12.19.1
    * libcpg4-2.4.6-150300.12.19.1
    * corosync-debuginfo-2.4.6-150300.12.19.1
    * libcmap4-2.4.6-150300.12.19.1
    * corosync-qdevice-debuginfo-2.4.6-150300.12.19.1
    * libvotequorum8-2.4.6-150300.12.19.1
    * corosync-qnetd-2.4.6-150300.12.19.1
    * corosync-testagents-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-debuginfo-2.4.6-150300.12.19.1
    * libcorosync-devel-2.4.6-150300.12.19.1
    * libcpg4-debuginfo-2.4.6-150300.12.19.1
    * libtotem_pg5-2.4.6-150300.12.19.1
    * corosync-2.4.6-150300.12.19.1
    * libsam4-debuginfo-2.4.6-150300.12.19.1
    * corosync-testagents-2.4.6-150300.12.19.1
    * libsam4-2.4.6-150300.12.19.1
    * libquorum5-debuginfo-2.4.6-150300.12.19.1
    * libcfg6-2.4.6-150300.12.19.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-81665.html
  * https://www.suse.com/security/cve/CVE-2026-81666.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1278738
  * https://bugzilla.suse.com/show_bug.cgi?id=1278739

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