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ALSA-2021:3061 — Moderate: virt:rhel and virt-devel:rhel security and bug fix update

2026-10-04T04:38:18.772499+00:00

Affected: AlmaLinux:8: libguestfs-winsupport, AlmaLinux:8: libiscsi, AlmaLinux:8: libiscsi-devel, AlmaLinux:8: libiscsi-utils, AlmaLinux:8: libnbd, AlmaLinux:8: libnbd-devel, AlmaLinux:8: libvirt-dbus, AlmaLinux:8: nbdfuse, AlmaLinux:8: nbdkit, AlmaLinux:8: nbdkit-bash-completion and 25 more

Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems.

Security Fix(es):

* QEMU: msix: OOB access during mmio operations may lead to DoS (CVE-2020-13754)

* hivex: Buffer overflow when provided invalid node key length (CVE-2021-3504)

* QEMU: net: an assert failure via eth_get_gso_type (CVE-2020-27617)

* QEMU: net: infinite loop in loopback mode may lead to stack overflow (CVE-2021-3416)

* qemu: out-of-bound heap buffer access via an interrupt ID field (CVE-2021-20221)

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):

* cannot restart default network and firewalld: iptables: No chain/target/match by that name. (BZ#1958301)

* RHEL8.4 Nightly[0322] - KVM guest fails to find zipl boot menu index (qemu-kvm) (BZ#1975679)

bdu:2021-05200

2026-10-04T04:38:18.772615+00:00

bdu:2021-05200

Withdrawn: BELL-CVE-2020-27617 — CVE-2020-27617 does not affect BellSoft software

2026-10-04T04:38:18.772634+00:00

Withdrawn by the publisher.

cnvd-2020-61975

2026-10-04T04:38:18.772651+00:00

cnvd-2020-61975

EUVD-2026-46558

2026-10-04T04:38:18.772664+00:00

EUVD-2026-46558

fkie_cve-2020-27617

2026-10-04T04:38:18.772676+00:00

eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest can crash the QEMU process via packet data that lacks a valid Layer 3 protocol.

GHSA-rxvx-vx9w-jw3j

2026-10-04T04:38:18.772697+00:00

eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest can crash the QEMU process via packet data that lacks a valid Layer 3 protocol.

gsd-2020-27617

2026-10-04T04:38:18.772712+00:00

gsd-2020-27617

RHBA-2021:0639 — Red Hat Bug Fix Advisory: virt:8.3 bug fix and enhancement update

2026-10-04T04:38:18.772722+00:00

QEMU: infinite loop in e1000e_write_packet_to_guest() in hw/net/e1000e_core.c QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c QEMU: net: an assert failure via eth_get_gso_type QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c QEMU: ide: atapi: OOB access while processing read commands QEMU: virtiofsd: potential privileged host device access from guest

SUSE-SU-2021:1305-1 — Security update for qemu

2026-10-04T04:38:18.772747+00:00

Security update for qemu

UBUNTU-CVE-2020-27617

2026-10-04T04:38:18.772776+00:00

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

eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest can crash the QEMU process via packet data that lacks a valid Layer 3 protocol.

WID-SEC-W-2022-1270 — QEMU: Schwachstellen ermöglichen Denial of Service

2026-10-04T04:38:18.772799+00:00

Ein lokaler Angreifer kann mehrere Schwachstellen in QEMU ausnutzen, um einen Denial of Service Angriff durchzuführen.