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ALSA-2022:5263 — Moderate: qemu-kvm security and bug fix update

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)

bdu:2022-05851

cnvd-2022-84161

EUVD-2026-14875

fkie_cve-2022-26354

A flaw was found in the vhost-vsock device of QEMU. In case of error, an invalid element was not detached from the virtqueue before freeing its memory, leading to memory leakage and other unexpected results. Affected QEMU versions <= 6.2.0.

GHSA-jmf2-6wvc-36fj

gsd-2022-26354

msrc_CVE-2022-26354 — A flaw was found in the vhost-vsock device of QEMU. In case of error an invalid element was not detached from the virtq…

msrc_CVE-2022-26354

OESA-2022-1662 — qemu security update

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…

RHSA-2022:5002 — Red Hat Security Advisory: virt:av and virt-devel:av security and bug fix update

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

RHSA-2022:5263 — Red Hat Security Advisory: qemu-kvm security and bug fix update

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

UBUNTU-CVE-2022-26354

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

WID-SEC-W-2022-0114 — QEMU: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen

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