RLSA-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...

qemu-kvm security update

An update is available for qemu-kvm. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Kernel-based Virtual Machine KVM is a full virtualization solution for Linu...

RockyLinux 10 : qemu-kvm (RLSA-2026:1831)

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:1831 advisory. qemu-kvm: VNC WebSocket handshake use-after-free CVE-2025-11234 Tenable has extracted the preceding description block directly from the RockyLinux security...

CVE-2020-37134

UltraVNC Viewer 1.2.4.0 contains a denial of service vulnerability that allows attackers to crash the application by manipulating VNC Server input. Attackers can generate a malformed 256-byte payload and paste it into the VNC Server connection dialog to trigger an application crash...

EUVD-2020-31034

UltraVNC Viewer 1.2.4.0 contains a denial of service vulnerability that allows attackers to crash the application by manipulating VNC Server input. Attackers can generate a malformed 256-byte payload and paste it into the VNC Server connection dialog to trigger an application crash...

CVE-2020-37134

UltraVNC Viewer 1.2.4.0 contains a denial of service vulnerability that allows attackers to crash the application by manipulating VNC Server input. Attackers can generate a malformed 256-byte payload and paste it into the VNC Server connection dialog to trigger an application crash...

CVE-2020-37133 UltraVNC Launcher 1.2.4.0 - 'RepeaterHost' Denial of Service

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in the Repeater Host configuration field that allows attackers to crash the application. Attackers can paste an overly long string of 300 characters into the Repeater Host property to trigger an application crash...

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

An update for qemu-kvm is now available for Red Hat Enterprise Linux 10. 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 each vulnerability from...

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...