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 12 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: virtio-net: map leaking on error during receive (CVE-2022-26353) * QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak (CVE-2022-26354) 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): * AlmaLinux 9.0 guest with vsock device migration failed from AlmaLinux 9.0 > AlmaLinux 8.6 (BZ#2071102)

A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for CVE-2021-3748, which forgot to unmap the cached virtqueue elements on error, leading to memory leakage and other unexpected results. Affected QEMU version: 6.2.0.

A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for CVE-2021-3748, which forgot to unmap the cached virtqueue elements on error, leading to memory leakage and other unexpected results. Affected QEMU version: 6.2.0.

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

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.(CVE-2021-4206)

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values cursor->header.width and cursor->header.height can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.(CVE-2021-4207)

A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.(CVE-2021-20196)

A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for CVE-2021-3748, which for…

QEMU: QXL: integer overflow in cursor_alloc() can lead to heap buffer overflow QEMU: QXL: double fetch in qxl_cursor() can lead to heap buffer overflow QEMU: virtio-net: map leaking on error during receive QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak

QEMU: virtio-net: map leaking on error during receive QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak

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

A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for CVE-2021-3748, which forgot to unmap the cached virtqueue elements on error, leading to memory leakage and other unexpected results. Affected QEMU version: 6.2.0.

Ein lokaler Angreifer kann mehrere Schwachstellen in QEMU ausnutzen, um Informationen offenzulegen oder sonstige Auswirkungen zu verursachen.