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openSUSE 15.4 QEMU Critical Use-After-Free Denial of Service CVE-2025-11234

opensuse
Calendar Grey February 11, 2026
Dist Opensuse Esm H88
Address the critical use-after-free issue in qemu on openSUSE with this important security advisory.
An update that solves one vulnerability can now be installed.

Description

This update for qemu fixes the following issues:

* CVE-2025-11234: Fixed use-after-free in websocket handshake code can lead to

denial of service (bsc#1250984).

Topics%20covered

Topics Covered

security advisory denial of service important QEMU OpenSUSE use-after-free

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:

* openSUSE Leap 15.4

zypper in -t patch SUSE-2026-436=1

* SUSE Linux Enterprise Micro for Rancher 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-436=1

* SUSE Linux Enterprise Micro 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-436=1

* SUSE Linux Enterprise Micro for Rancher 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-436=1

* SUSE Linux Enterprise Micro 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-436=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-436=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-436=1

* SUSE Linux Enterprise Server 15 SP4 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-436=1

* SUSE Linux Enterprise Server for SAP...

Read the Full Advisory

Package List

* openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586)

* qemu-chardev-baum-6.2.0-150400.37.49.1

* qemu-chardev-spice-6.2.0-150400.37.49.1

* qemu-hw-display-virtio-gpu-pci-debuginfo-6.2.0-150400.37.49.1

* qemu-ui-gtk-debuginfo-6.2.0-150400.37.49.1

* qemu-accel-qtest-debuginfo-6.2.0-150400.37.49.1

* qemu-extra-6.2.0-150400.37.49.1

* qemu-ivshmem-tools-6.2.0-150400.37.49.1

* qemu-vhost-user-gpu-6.2.0-150400.37.49.1

* qemu-x86-6.2.0-150400.37.49.1

* qemu-debugsource-6.2.0-150400.37.49.1

* qemu-ui-curses-debuginfo-6.2.0-150400.37.49.1

* qemu-arm-6.2.0-150400.37.49.1

* qemu-block-ssh-debuginfo-6.2.0-150400.37.49.1

* qemu-block-curl-debuginfo-6.2.0-150400.37.49.1

* qemu-audio-oss-6.2.0-150400.37.49.1

* qemu-hw-display-qxl-debuginfo-6.2.0-150400.37.49.1

* qemu-block-gluster-debuginfo-6.2.0-150400.37.49.1

* qemu-audio-alsa-debuginfo-6.2.0-150400.37.49.1

* qemu-hw-display-virtio-gpu-pci-6.2.0-150400.37.49.1

* qemu-block-dmg-6.2.0-150400.37.49.1

* qemu-hw-s390x-virtio-gpu-ccw-6.2.0-150400.37.49.1

*...

Read the Full Advisory

References

* bsc#1250984

## References:

* https://www.suse.com/security/cve/CVE-2025-11234.html

* https://bugzilla.suse.com/show_bug.cgi?id=1250984

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0436-1
Release Date: 2026-02-11T09:26:35Z
Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server 15 SP4 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP4

Topics%20covered

Topics Covered

security advisory denial of service important QEMU OpenSUSE use-after-free

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