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openSUSE openvswitch3 Important Heap Over-Read Vulnern 2026-2476-1

opensuse
Calendar Grey June 22, 2026
Dist Opensuse Esm H88
An essential update for openvswitch3 addresses important vulnerabilities in openSUSE, ensuring system integrity.
An update that solves two vulnerabilities can now be installed.

Description

This update for openvswitch3 fixes the following issues

* CVE-2026-5265: heap over-read in ICMP error response generation

(bsc#1262498).

* CVE-2026-5367: heap over-read in OVN DHCPv6 client ID processing

(bsc#1262499).

Topics%20covered

Topics Covered

security advisory important DDoS OpenSUSE heap over-read openvswitch3

Patch

## 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 15 SP5 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-2476=1

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-2476=1

* openSUSE Leap 15.5

zypper in -t patch SUSE-2026-2476=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-2476=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-2476=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP5

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-2476=1

Package List

* openSUSE Leap 15.5 (aarch64 i586 ppc64le s390x x86_64)

* ovn3-debuginfo-23.03.3-150500.3.31.1

* libovn-23_03-0-23.03.3-150500.3.31.1

* ovn3-host-debuginfo-23.03.3-150500.3.31.1

* openvswitch3-vtep-3.1.7-150500.3.31.1

* ovn3-vtep-23.03.3-150500.3.31.1

* openvswitch3-3.1.7-150500.3.31.1

* openvswitch3-test-debuginfo-3.1.7-150500.3.31.1

* python3-ovs3-3.1.7-150500.3.31.1

* libopenvswitch-3_1-0-3.1.7-150500.3.31.1

* openvswitch3-debuginfo-3.1.7-150500.3.31.1

* openvswitch3-devel-3.1.7-150500.3.31.1

* ovn3-central-23.03.3-150500.3.31.1

* ovn3-docker-23.03.3-150500.3.31.1

* libopenvswitch-3_1-0-debuginfo-3.1.7-150500.3.31.1

* libovn-23_03-0-debuginfo-23.03.3-150500.3.31.1

* ovn3-host-23.03.3-150500.3.31.1

* ovn3-23.03.3-150500.3.31.1

* openvswitch3-pki-3.1.7-150500.3.31.1

* openvswitch3-debugsource-3.1.7-150500.3.31.1

* openvswitch3-test-3.1.7-150500.3.31.1

* openvswitch3-ipsec-3.1.7-150500.3.31.1

* ovn3-central-debuginfo-23.03.3-150500.3.31.1

* openvswitch3-vtep-debuginfo-3.1.7-150500.3.31.1

*...

Read the Full Advisory

References

* bsc#1262498

* bsc#1262499

## References:

* https://www.suse.com/security/cve/CVE-2026-5265.html

* https://www.suse.com/security/cve/CVE-2026-5367.html

* https://bugzilla.suse.com/show_bug.cgi?id=1262498

* https://bugzilla.suse.com/show_bug.cgi?id=1262499

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2476-1
Release Date: 2026-06-22T08:24:24Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP5 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP5

Topics%20covered

Topics Covered

security advisory important DDoS OpenSUSE heap over-read openvswitch3

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