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ALSA-2020:4676 — Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

2026-10-03T10:28:11.077288+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, AlmaLinux:8: libvirt-admin and 61 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.

The following packages have been upgraded to a later upstream version: hivex (1.3.18), libguestfs (1.40.2), libguestfs-winsupport (8.2), libvirt (6.0.0), libvirt-dbus (1.3.0), libvirt-python (6.0.0), nbdkit (1.16.2), perl-Sys-Virt (6.0.0), qemu-kvm (4.2.0), seabios (1.13.0), SLOF (20191022). (BZ#1810193, BZ#1844296)

Security Fix(es):

* libvirt: leak of /dev/mapper/control into QEMU guests (CVE-2020-14339)

* QEMU: Slirp: use-after-free during packet reassembly (CVE-2019-15890)

* libvirt: Potential DoS by holding a monitor job while querying QEMU guest-agent (CVE-2019-20485)

* QEMU: slirp: use-after-free in ip_reass() function in ip_input.c (CVE-2020-1983)

* libvirt: Potential denial of service via active pool without target path (CVE-2020-10703)

* libvirt: leak of sensitive cookie information via dumpxml (CVE-2020-14301)

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.

Withdrawn: BELL-CVE-2019-20485 — CVE-2019-20485 does not affect BellSoft software

2026-10-03T10:28:11.077475+00:00

Withdrawn by the publisher.

certfr-2022-avi-267 — De multiples vulnérabilités ont été découvertes dans Juniper Networks Junos Space. Elles permettent à un attaquant de p…

2026-10-03T10:28:11.077497+00:00

certfr-2022-avi-267

cnvd-2020-20734

2026-10-03T10:28:11.077514+00:00

cnvd-2020-20734

EUVD-2026-59960

2026-10-03T10:28:11.077527+00:00

EUVD-2026-59960

fkie_cve-2019-20485

2026-10-03T10:28:11.077538+00:00

qemu/qemu_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).

GHSA-9283-64xm-984q

2026-10-03T10:28:11.077561+00:00

qemu/qemu_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).

gsd-2019-20485

2026-10-03T10:28:11.077575+00:00

gsd-2019-20485

RHBA-2020:2017 — Red Hat Bug Fix Advisory: Advanced Virtualization bug fix and enhancement update

2026-10-03T10:28:11.077586+00:00

libvirt: Potential DoS by holding a monitor job while querying QEMU guest-agent

RHSA-2020:4000 — Red Hat Security Advisory: libvirt security and bug fix update

2026-10-03T10:28:11.077606+00:00

libvirt: Potential DoS by holding a monitor job while querying QEMU guest-agent libvirt: Potential denial of service via active pool without target path

Withdrawn: UBUNTU-CVE-2019-20485

2026-10-03T10:28:11.077624+00:00

Withdrawn by the publisher.

Affected: Ubuntu:16.04:LTS: libvirt, Ubuntu:18.04:LTS: libvirt, Ubuntu:20.04:LTS: libvirt

qemu/qemu_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).

WID-SEC-W-2024-1980 — libvirt: Schwachstelle ermöglicht Denial of Service

2026-10-03T10:28:11.077646+00:00

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