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Red Hat: CVE-2020-27821: Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update (RHSA-2021:1762)

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Red Hat: CVE-2020-27821: Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update (RHSA-2021:1762)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
12/08/2020
Created
05/21/2021
Added
05/21/2021
Modified
05/21/2021

Description

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

Solution(s)

  • redhat-upgrade-hivex
  • redhat-upgrade-hivex-debuginfo
  • redhat-upgrade-hivex-debugsource
  • redhat-upgrade-hivex-devel
  • redhat-upgrade-libguestfs
  • redhat-upgrade-libguestfs-bash-completion
  • redhat-upgrade-libguestfs-benchmarking
  • redhat-upgrade-libguestfs-benchmarking-debuginfo
  • redhat-upgrade-libguestfs-debuginfo
  • redhat-upgrade-libguestfs-debugsource
  • redhat-upgrade-libguestfs-devel
  • redhat-upgrade-libguestfs-gfs2
  • redhat-upgrade-libguestfs-gobject
  • redhat-upgrade-libguestfs-gobject-debuginfo
  • redhat-upgrade-libguestfs-gobject-devel
  • redhat-upgrade-libguestfs-inspect-icons
  • redhat-upgrade-libguestfs-java
  • redhat-upgrade-libguestfs-java-debuginfo
  • redhat-upgrade-libguestfs-java-devel
  • redhat-upgrade-libguestfs-javadoc
  • redhat-upgrade-libguestfs-man-pages-ja
  • redhat-upgrade-libguestfs-man-pages-uk
  • redhat-upgrade-libguestfs-rescue
  • redhat-upgrade-libguestfs-rsync
  • redhat-upgrade-libguestfs-tools
  • redhat-upgrade-libguestfs-tools-c
  • redhat-upgrade-libguestfs-tools-c-debuginfo
  • redhat-upgrade-libguestfs-winsupport
  • redhat-upgrade-libguestfs-xfs
  • redhat-upgrade-libiscsi
  • redhat-upgrade-libiscsi-debuginfo
  • redhat-upgrade-libiscsi-debugsource
  • redhat-upgrade-libiscsi-devel
  • redhat-upgrade-libiscsi-utils
  • redhat-upgrade-libiscsi-utils-debuginfo
  • redhat-upgrade-libnbd
  • redhat-upgrade-libnbd-debuginfo
  • redhat-upgrade-libnbd-debugsource
  • redhat-upgrade-libnbd-devel
  • redhat-upgrade-libvirt
  • redhat-upgrade-libvirt-admin
  • redhat-upgrade-libvirt-admin-debuginfo
  • redhat-upgrade-libvirt-bash-completion
  • redhat-upgrade-libvirt-client
  • redhat-upgrade-libvirt-client-debuginfo
  • redhat-upgrade-libvirt-daemon
  • redhat-upgrade-libvirt-daemon-config-network
  • redhat-upgrade-libvirt-daemon-config-nwfilter
  • redhat-upgrade-libvirt-daemon-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-interface
  • redhat-upgrade-libvirt-daemon-driver-interface-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-network
  • redhat-upgrade-libvirt-daemon-driver-network-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-nodedev
  • redhat-upgrade-libvirt-daemon-driver-nodedev-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-nwfilter
  • redhat-upgrade-libvirt-daemon-driver-nwfilter-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-qemu
  • redhat-upgrade-libvirt-daemon-driver-qemu-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-secret
  • redhat-upgrade-libvirt-daemon-driver-secret-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage
  • redhat-upgrade-libvirt-daemon-driver-storage-core
  • redhat-upgrade-libvirt-daemon-driver-storage-core-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage-disk
  • redhat-upgrade-libvirt-daemon-driver-storage-disk-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage-gluster
  • redhat-upgrade-libvirt-daemon-driver-storage-gluster-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage-iscsi
  • redhat-upgrade-libvirt-daemon-driver-storage-iscsi-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage-iscsi-direct
  • redhat-upgrade-libvirt-daemon-driver-storage-iscsi-direct-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage-logical
  • redhat-upgrade-libvirt-daemon-driver-storage-logical-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage-mpath
  • redhat-upgrade-libvirt-daemon-driver-storage-mpath-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage-rbd
  • redhat-upgrade-libvirt-daemon-driver-storage-rbd-debuginfo
  • redhat-upgrade-libvirt-daemon-driver-storage-scsi
  • redhat-upgrade-libvirt-daemon-driver-storage-scsi-debuginfo
  • redhat-upgrade-libvirt-daemon-kvm
  • redhat-upgrade-libvirt-dbus
  • redhat-upgrade-libvirt-dbus-debuginfo
  • redhat-upgrade-libvirt-dbus-debugsource
  • redhat-upgrade-libvirt-debuginfo
  • redhat-upgrade-libvirt-debugsource
  • redhat-upgrade-libvirt-devel
  • redhat-upgrade-libvirt-docs
  • redhat-upgrade-libvirt-libs
  • redhat-upgrade-libvirt-libs-debuginfo
  • redhat-upgrade-libvirt-lock-sanlock
  • redhat-upgrade-libvirt-lock-sanlock-debuginfo
  • redhat-upgrade-libvirt-nss
  • redhat-upgrade-libvirt-nss-debuginfo
  • redhat-upgrade-libvirt-python-debugsource
  • redhat-upgrade-lua-guestfs
  • redhat-upgrade-lua-guestfs-debuginfo
  • redhat-upgrade-nbdfuse
  • redhat-upgrade-nbdfuse-debuginfo
  • redhat-upgrade-nbdkit
  • redhat-upgrade-nbdkit-bash-completion
  • redhat-upgrade-nbdkit-basic-filters
  • redhat-upgrade-nbdkit-basic-filters-debuginfo
  • redhat-upgrade-nbdkit-basic-plugins
  • redhat-upgrade-nbdkit-basic-plugins-debuginfo
  • redhat-upgrade-nbdkit-curl-plugin
  • redhat-upgrade-nbdkit-curl-plugin-debuginfo
  • redhat-upgrade-nbdkit-debuginfo
  • redhat-upgrade-nbdkit-debugsource
  • redhat-upgrade-nbdkit-devel
  • redhat-upgrade-nbdkit-example-plugins
  • redhat-upgrade-nbdkit-example-plugins-debuginfo
  • redhat-upgrade-nbdkit-gzip-plugin
  • redhat-upgrade-nbdkit-gzip-plugin-debuginfo
  • redhat-upgrade-nbdkit-linuxdisk-plugin
  • redhat-upgrade-nbdkit-linuxdisk-plugin-debuginfo
  • redhat-upgrade-nbdkit-python-plugin
  • redhat-upgrade-nbdkit-python-plugin-debuginfo
  • redhat-upgrade-nbdkit-server
  • redhat-upgrade-nbdkit-server-debuginfo
  • redhat-upgrade-nbdkit-ssh-plugin
  • redhat-upgrade-nbdkit-ssh-plugin-debuginfo
  • redhat-upgrade-nbdkit-vddk-plugin
  • redhat-upgrade-nbdkit-vddk-plugin-debuginfo
  • redhat-upgrade-nbdkit-xz-filter
  • redhat-upgrade-nbdkit-xz-filter-debuginfo
  • redhat-upgrade-netcf
  • redhat-upgrade-netcf-debuginfo
  • redhat-upgrade-netcf-debugsource
  • redhat-upgrade-netcf-devel
  • redhat-upgrade-netcf-libs
  • redhat-upgrade-netcf-libs-debuginfo
  • redhat-upgrade-perl-hivex
  • redhat-upgrade-perl-hivex-debuginfo
  • redhat-upgrade-perl-sys-guestfs
  • redhat-upgrade-perl-sys-guestfs-debuginfo
  • redhat-upgrade-perl-sys-virt
  • redhat-upgrade-perl-sys-virt-debuginfo
  • redhat-upgrade-perl-sys-virt-debugsource
  • redhat-upgrade-python3-hivex
  • redhat-upgrade-python3-hivex-debuginfo
  • redhat-upgrade-python3-libguestfs
  • redhat-upgrade-python3-libguestfs-debuginfo
  • redhat-upgrade-python3-libnbd
  • redhat-upgrade-python3-libnbd-debuginfo
  • redhat-upgrade-python3-libvirt
  • redhat-upgrade-python3-libvirt-debuginfo
  • redhat-upgrade-qemu-guest-agent
  • redhat-upgrade-qemu-guest-agent-debuginfo
  • redhat-upgrade-qemu-img
  • redhat-upgrade-qemu-img-debuginfo
  • redhat-upgrade-qemu-kvm
  • redhat-upgrade-qemu-kvm-block-curl
  • redhat-upgrade-qemu-kvm-block-curl-debuginfo
  • redhat-upgrade-qemu-kvm-block-gluster
  • redhat-upgrade-qemu-kvm-block-gluster-debuginfo
  • redhat-upgrade-qemu-kvm-block-iscsi
  • redhat-upgrade-qemu-kvm-block-iscsi-debuginfo
  • redhat-upgrade-qemu-kvm-block-rbd
  • redhat-upgrade-qemu-kvm-block-rbd-debuginfo
  • redhat-upgrade-qemu-kvm-block-ssh
  • redhat-upgrade-qemu-kvm-block-ssh-debuginfo
  • redhat-upgrade-qemu-kvm-common
  • redhat-upgrade-qemu-kvm-common-debuginfo
  • redhat-upgrade-qemu-kvm-core
  • redhat-upgrade-qemu-kvm-core-debuginfo
  • redhat-upgrade-qemu-kvm-debuginfo
  • redhat-upgrade-qemu-kvm-debugsource
  • redhat-upgrade-ruby-hivex
  • redhat-upgrade-ruby-hivex-debuginfo
  • redhat-upgrade-ruby-libguestfs
  • redhat-upgrade-ruby-libguestfs-debuginfo
  • redhat-upgrade-seabios
  • redhat-upgrade-seabios-bin
  • redhat-upgrade-seavgabios-bin
  • redhat-upgrade-sgabios
  • redhat-upgrade-sgabios-bin
  • redhat-upgrade-supermin
  • redhat-upgrade-supermin-debuginfo
  • redhat-upgrade-supermin-debugsource
  • redhat-upgrade-supermin-devel
  • redhat-upgrade-virt-dib
  • redhat-upgrade-virt-dib-debuginfo
  • redhat-upgrade-virt-v2v
  • redhat-upgrade-virt-v2v-debuginfo

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