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ALSA-2021:1762 — Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

2026-10-03T18:52:19.827689+00:00

Affected: AlmaLinux:8: hivex, AlmaLinux:8: hivex-devel, 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 and 36 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):

* libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c (CVE-2020-25637)

* QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c (CVE-2020-27821)

* QEMU: ide: atapi: OOB access while processing read commands (CVE-2020-29443)

* QEMU: heap buffer overflow in iscsi_aio_ioctl_cb() in block/iscsi.c may lead to information disclosure (CVE-2020-11947)

* QEMU: reachable assertion failure in net_tx_pkt_add_raw_fragment() in hw/net/net_tx_pkt.c (CVE-2020-16092)

* QEMU: infinite loop in e1000e_write_packet_to_guest() in hw/net/e1000e_core.c (CVE-2020-25707)

* QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c (CVE-2020-25723)

* QEMU: e1000e: infinite loop scenario in case of null packet descriptor (CVE-2020-28916)

* QEMU: slirp: out-of-bounds access while processing ARP/NCSI packets (CVE-2020-29129, CVE-2020-29130)

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 Rel…

bdu:2021-05250

2026-10-03T18:52:19.827837+00:00

bdu:2021-05250

Withdrawn: BELL-CVE-2020-28916 — CVE-2020-28916 does not affect BellSoft software

2026-10-03T18:52:19.827856+00:00

Withdrawn by the publisher.

cnvd-2021-39772

2026-10-03T18:52:19.827873+00:00

cnvd-2021-39772

EUVD-2026-47133

2026-10-03T18:52:19.827885+00:00

EUVD-2026-47133

fkie_cve-2020-28916

2026-10-03T18:52:19.827896+00:00

hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop via an RX descriptor with a NULL buffer address.

GHSA-49q3-9xm4-cpj5

2026-10-03T18:52:19.827917+00:00

hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop via an RX descriptor with a NULL buffer address.

gsd-2020-28916

2026-10-03T18:52:19.827930+00:00

gsd-2020-28916

RHSA-2021:1762 — Red Hat Security Advisory: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

2026-10-03T18:52:19.827941+00:00

QEMU: heap buffer overflow in iscsi_aio_ioctl_cb() in block/iscsi.c may lead to information disclosure QEMU: reachable assertion failure in net_tx_pkt_add_raw_fragment() in hw/net/net_tx_pkt.c libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c 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: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c QEMU: e1000e: infinite loop scenario in case of null packet descriptor QEMU: slirp: out-of-bounds access while processing ARP/NCSI packets QEMU: slirp: out-of-bounds access while processing ARP/NCSI packets QEMU: ide: atapi: OOB access while processing read commands

UBUNTU-CVE-2020-28916

2026-10-03T18:52:19.827977+00:00

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

hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop via an RX descriptor with a NULL buffer address.

WID-SEC-W-2022-1272 — QEMU: Schwachstelle ermöglicht Denial of Service

2026-10-03T18:52:19.827997+00:00

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