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SUSE Corosync Important DoS Information Exposure Vuln 2026-1394-1

suse
Calendar Grey April 16, 2026
Dist Suse Esm H88
Critical patch for SUSE addressing Denial of Service and information exposure in corosync. Installation recommended.
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: * openSUSE Leap 15.3 zypper in -t patch SUSE-2026-1394=1 * openSUSE Leap 15.6 zypper in -t patch openSUSE-SLE-15.6-2026-1394=1 * SUSE Linux Enterprise High Availability Extension 15 SP4 zypper in -t patch SUSE-SLE-Product-HA-15-SP4-2026-1394=1 * SUSE Linux Enterprise High Availability Extension 15 SP5

Topics%20covered

Topics Covered

security advisory denial of service SuSE important information exposure 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:

* openSUSE Leap 15.3

* openSUSE Leap 15.6

* SUSE Linux Enterprise High Availability Extension 15 SP4

* SUSE Linux Enterprise High Availability Extension 15 SP5

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1394-1
Release Date: 2026-04-16T10:22:10Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE important information exposure corosync

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