qemu-kvm: VNC WebSocket handshake use-after-free

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network acces...

PT-2026-6578

Name of the Vulnerable Software and Affected Versions UltraVNC Viewer version 1.2.4.0 Description The software contains a denial of service issue that allows attackers to crash the application. Attackers can create a 256-byte malformed payload and paste it into the VNC Server connection dialog,...

RHEL 10 : qemu-kvm (RHSA-2026:1831)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:1831 advisory. Kernel-based Virtual Machine KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the...

Oracle Linux 10 : qemu-kvm (ELSA-2026-1831)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-1831 advisory. - Resolves: RHEL-120118 CVE-2025-11234 qemu-kvm: VNC WebSocket handshake use-after-free rhel-10.1.z Tenable has extracted the preceding description block...

qemu-kvm security update

10.0.0-14.el101.5 - kvm-Revert-i386-cpu-Move-adjustment-of-CPUIDEXTPDCM-be.patch RHEL-135453 - Resolves: RHEL-135453 Live migration after workload update fails with operation failed: guest CPU doesn't match specification: missing features: pdcm rhel-10.1.z 10.0.0-14.el101.4 -...

ALSA-2026:1831 Moderate: qemu-kvm security update

Kernel-based Virtual Machine KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fixes: qemu-kvm: VNC WebSocket handshake use-after-free CVE-2025-11234 For more...

SUSE-SU-2026:0288-1 Security update for qemu

This update for qemu fixes the following issues: Security issues fixed: - CVE-2025-12464: stack-based buffer overflow in the e1000 network device operations can be exploited by a malicious guest user to crash the QEMU process on the host bsc1253002. - CVE-2025-11234: use-after-free in WebSocket...

MiracleLinux 9 : qemu-kvm-7.2.0-14.el9.5.ML.1 (AXSA:2023-6420:06)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2023-6420:06 advisory. QEMU: VNC: improper I/O watch removal in TLS handshake can lead to remote unauthenticated denial of service CVE-2023-3354 Tenable has extracted the preceding...

MiracleLinux 9 : qemu-kvm-7.2.0-14.el9 (AXSA:2023-5713:03)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2023-5713:03 advisory. QEMU: VNC: integer underflow in vncclientcuttextext leads to CPU exhaustion CVE-2022-3165 QEMU: ACPI ERST: memory corruption issues in readerstrecor...

MiracleLinux 8 : virt:rhel and virt-devel:rhel (AXSA:2023-6011:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2023-6011:01 advisory. ntfs-3g: heap-based buffer overflow in ntfsck CVE-2021-46790 QEMU: VNC: integer underflow in vncclientcuttextext leads to CPU exhaustion CVE-2022-31...

MiracleLinux 9 : qemu-kvm-8.2.0-11.el9 (AXSA:2024-7897:02)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-7897:02 advisory. QEMU: e1000e: heap use-after-free in e1000ewritepackettoguest CVE-2023-3019 QEMU: VNC: infinite loop in inflatebuffer leads to denial of service...

MiracleLinux 7 : gtk-vnc-0.7.0-2.el7 (AXSA:2017-1910:01)

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2017-1910:01 advisory. gtk-vnc is a VNC viewer widget for GTK2. It is built using coroutines allowing it to be completely asynchronous while remaining single threaded...

MiracleLinux 4 : vino-2.28.1-8.AXS4 (AXSA:2013-86:01)

The remote MiracleLinux 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2013-86:01 advisory. Vino is a VNC server for GNOME. It allows remote users to connect to a running GNOME session using VNC. Security issues fixed with this release:...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.18.31 bug fix and security update

Red Hat OpenShift Container Platform release 4.18.31 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.18. Red Hat Product Security has rated this update as having a...

MiracleLinux 3 : vnc-4.1.2-14.1.0.1.AXS3 (AXSA:2010-240:01)

The remote MiracleLinux 3 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2010-240:01 advisory. Virtual Network Computing VNC is a remote display system which allows you to view a computing 'desktop' environment not only on the machine where it is runnin...

CVE-2023-43633

On boot, the Pillar eve container checks for the existence and content of “/config/GlobalConfig/global.json”. If the file exists, it overrides the existing configuration on the device on boot. This allows an attacker to change the system’s configuration, which also includes some debug functions...

CVE-2022-27502

RealVNC VNC Server 6.9.0 through 5.1.0 for Windows allows local privilege escalation because an installer repair operation executes %TEMP% files as SYSTEM...

openSUSE 16 Security Update : qemu (openSUSE-SU-2025:20171-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2025:20171-1 advisory. Update to version 10.0.7. Security issues fixed: - CVE-2025-12464: stack-based buffer overflow in the e1000 network device operations can be...

Moderate: Red Hat Security Advisory: qemu-kvm security update

An update for qemu-kvm is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

qemu-kvm: VNC WebSocket handshake use-after-free

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network acces...