Alerts This Week
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Alerts This Week
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SUSE Corosync Notable Denial of Service Vulnerabilities 2026-21224-1

suse
Calendar Grey April 21, 2026
Dist Suse Esm H88
SUSE has released an important advisory for Corosync addressing denial of service issues via crafted UDP packets. Stay secure!
An update that solves two vulnerabilities can now be installed.

Summary

## 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

Topics%20covered

Topics Covered

security advisory denial of service SuSE important information disclosure corosync

References

* bsc#1261299

* bsc#1261300

Cross-

* CVE-2026-35091

* CVE-2026-35092

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.

##

* https://www.suse.com/security/cve/CVE-2026-35091.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21224-1
Release Date: 2026-04-10T11:19:07Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE important information disclosure corosync

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