Affected: AlmaLinux:9: qemu-guest-agent, AlmaLinux:9: qemu-img, AlmaLinux:9: qemu-kvm, AlmaLinux:9: qemu-kvm-audio-pa, AlmaLinux:9: qemu-kvm-block-curl, AlmaLinux:9: qemu-kvm-block-rbd, AlmaLinux:9: qemu-kvm-common, AlmaLinux:9: qemu-kvm-core, AlmaLinux:9: qemu-kvm-device-display-virtio-gpu, AlmaLinux:9: qemu-kvm-device-display-virtio-gpu-ccw and 9 more

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 Fix(es):

* QEMU: VNC: improper I/O watch removal in TLS handshake can lead to remote unauthenticated denial of service (CVE-2023-3354)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

* [qemu-kvm] rhel guest failed boot with multi disks on error Failed to start udev Wait for Complete Device Initialization (BZ#2211923) * [almalinux9.2] hotplug/hotunplug mlx vdpa device to the occupied addr port, then qemu core dump occurs after shutdown guest (BZ#2227721)

Affected: Alpaquita:23: qemu, Alpaquita:stream: qemu

security update for virt:rhel module

A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.

A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.

Affected: openEuler:20.03-LTS-SP1: qemu, openEuler:20.03-LTS-SP3: qemu, openEuler:22.03-LTS-SP1: qemu, openEuler:22.03-LTS-SP2: qemu

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fix(es): A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.(CVE-2023-3354)

NTFS-3G: buffer overflow issue in NTFS-3G can cause code execution via crafted metadata in an NTFS image QEMU: VNC: improper I/O watch removal in TLS handshake can lead to remote unauthenticated denial of service

Security update for qemu

Affected: Ubuntu:Pro:18.04:LTS: qemu, Ubuntu:20.04:LTS: qemu, Ubuntu:22.04:LTS: qemu

A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in QEMU ausnutzen, um einen Denial of Service Angriff durchzuführen.