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ALSA-2022:7967 — Moderate: qemu-kvm security, bug fix, and enhancement 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.

The following packages have been upgraded to a later upstream version: qemu-kvm (7.0.0). (BZ#2064757)

Security Fix(es):

* QEMU: hcd-ehci: DMA reentrancy issue leads to use-after-free (CVE-2021-3750) * QEMU: fdc: heap buffer overflow in DMA read data transfers (CVE-2021-3507) * QEMU: intel-hda: segmentation fault due to stack overflow (CVE-2021-3611) * QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c (CVE-2021-4158)

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.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

bdu:2023-01705

Withdrawn: BELL-CVE-2021-3507 — CVE-2021-3507 does not affect BellSoft software

Withdrawn by the publisher.

cnvd-2021-41095

ESSA-2022:0193 — security update for

security update for

EUVD-2026-20897

fkie_cve-2021-3507

A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.

GHSA-m99h-7jcp-j7w9

gsd-2021-3507

msrc_CVE-2021-3507 — A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_…

msrc_CVE-2021-3507

OESA-2022-1716 — 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 heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.(CVE-2021-3507) A stack overflow vulnerability was found in the Intel HD Audio device (intel-hda) of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability. This flaw affects QEMU versions prior to 7.0.0.(CVE-2021-3611)

RHSA-2022:7472 — Red Hat Security Advisory: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

QEMU: fdc: heap buffer overflow in DMA read data transfers libvirt: missing locking in nwfilterConnectNumOfNWFilters can lead to denial of service libguestfs: Buffer overflow in get_keys leads to DoS swtpm: Unchecked header size indicator against expected size

UBUNTU-CVE-2021-3507

Affected: Ubuntu:Pro:14.04:LTS: qemu, Ubuntu:Pro:16.04:LTS: qemu, Ubuntu:18.04:LTS: qemu, Ubuntu:20.04:LTS: qemu, Ubuntu:22.04:LTS: qemu

WID-SEC-W-2022-0419 — QEMU: Schwachstelle ermöglicht Denial of Service

Ein lokaler Angreifer kann eine Schwachstelle in QEMU ausnutzen, um einen Denial of Service Angriff durchzuführen oder Informationen offenzulegen.