FlawAtlas
Search the atlas
ALSA-2021:4191 Not scored

Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

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: net: e1000e: use-after-free while sending packets (CVE-2020-15859) * QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) (CVE-2021-3592) * QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) (CVE-2021-3593) * QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp) (CVE-2021-3594) * QEMU: slirp: invalid pointer initialization may lead to information disclosure (tftp) (CVE-2021-3595) * libvirt: Insecure sVirt label generation (CVE-2021-3631) * libvirt: Improper locking on ACL failure in virStoragePoolLookupByTargetPath API (CVE-2021-3667) 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.

Exploit probability Not scored
Published November 9, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:8 virt-v2v
AlmaLinux:8 perl-Sys-Guestfs
AlmaLinux:8 nbdkit-xz-filter
AlmaLinux:8 libvirt-daemon
AlmaLinux:8 libvirt-daemon-driver-nodedev
AlmaLinux:8 libvirt-daemon-driver-secret
AlmaLinux:8 python3-libnbd
AlmaLinux:8 sgabios
AlmaLinux:8 libvirt-nss
AlmaLinux:8 ruby-hivex
AlmaLinux:8 ruby-libguestfs
AlmaLinux:8 libvirt-daemon-kvm
AlmaLinux:8 sgabios-bin
AlmaLinux:8 libguestfs-gfs2
AlmaLinux:8 libguestfs-winsupport
AlmaLinux:8 nbdkit-example-plugins
AlmaLinux:8 supermin
AlmaLinux:8 python3-libvirt
AlmaLinux:8 libvirt-libs
AlmaLinux:8 libguestfs-bash-completion
AlmaLinux:8 libvirt
AlmaLinux:8 libguestfs-java-devel
AlmaLinux:8 perl-hivex
AlmaLinux:8 libvirt-daemon-driver-storage-logical
AlmaLinux:8 nbdkit-basic-plugins
AlmaLinux:8 libguestfs-javadoc
AlmaLinux:8 netcf-libs
AlmaLinux:8 perl-Sys-Virt
AlmaLinux:8 libguestfs-benchmarking
AlmaLinux:8 libvirt-daemon-driver-storage-scsi
AlmaLinux:8 python3-libguestfs
AlmaLinux:8 libguestfs-gobject-devel
AlmaLinux:8 seabios-bin
AlmaLinux:8 libguestfs-gobject
AlmaLinux:8 nbdkit-ssh-plugin
AlmaLinux:8 nbdkit-basic-filters
AlmaLinux:8 nbdkit-bash-completion
AlmaLinux:8 libvirt-lock-sanlock
AlmaLinux:8 libguestfs-rescue
AlmaLinux:8 libiscsi
AlmaLinux:8 python3-hivex
AlmaLinux:8 libvirt-daemon-driver-storage-gluster
AlmaLinux:8 libvirt-bash-completion
AlmaLinux:8 nbdkit
AlmaLinux:8 nbdkit-devel
AlmaLinux:8 libvirt-daemon-driver-storage-rbd
AlmaLinux:8 lua-guestfs
AlmaLinux:8 libguestfs-tools
AlmaLinux:8 libvirt-daemon-config-network
AlmaLinux:8 nbdfuse
AlmaLinux:8 nbdkit-python-plugin
AlmaLinux:8 libguestfs-rsync
AlmaLinux:8 libvirt-dbus
AlmaLinux:8 libvirt-docs
AlmaLinux:8 libguestfs-tools-c
AlmaLinux:8 netcf
AlmaLinux:8 hivex-devel
AlmaLinux:8 libvirt-daemon-driver-storage-disk
AlmaLinux:8 nbdkit-vddk-plugin
AlmaLinux:8 libvirt-daemon-driver-storage-iscsi
AlmaLinux:8 libvirt-daemon-driver-nwfilter
AlmaLinux:8 libvirt-devel
AlmaLinux:8 libguestfs-man-pages-uk
AlmaLinux:8 libvirt-client
AlmaLinux:8 libnbd
AlmaLinux:8 libguestfs-man-pages-ja
AlmaLinux:8 libvirt-daemon-driver-network
AlmaLinux:8 virt-dib
AlmaLinux:8 libvirt-daemon-driver-storage-core
AlmaLinux:8 hivex
AlmaLinux:8 nbdkit-server
AlmaLinux:8 libnbd-devel
AlmaLinux:8 seabios
AlmaLinux:8 libvirt-daemon-driver-qemu
AlmaLinux:8 libvirt-daemon-config-nwfilter
AlmaLinux:8 libguestfs-xfs
AlmaLinux:8 libiscsi-devel
AlmaLinux:8 nbdkit-curl-plugin
AlmaLinux:8 libiscsi-utils
AlmaLinux:8 libvirt-daemon-driver-storage-iscsi-direct
AlmaLinux:8 supermin-devel
AlmaLinux:8 libvirt-daemon-driver-storage
AlmaLinux:8 libguestfs
AlmaLinux:8 libvirt-daemon-driver-storage-mpath
AlmaLinux:8 libguestfs-inspect-icons
AlmaLinux:8 netcf-devel
AlmaLinux:8 libguestfs-java
AlmaLinux:8 nbdkit-linuxdisk-plugin
AlmaLinux:8 libvirt-daemon-driver-interface
AlmaLinux:8 nbdkit-gzip-plugin
AlmaLinux:8 seavgabios-bin
AlmaLinux:8 libvirt-admin
AlmaLinux:8 libguestfs-devel

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2021:4191

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: net: e1000e: use-after-free while sending packets (CVE-2020-15859) * QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) (CVE-2021-3592) * QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) (CVE-2021-3593) * QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp) (CVE-2021-3594) * QEMU: slirp: invalid pointer initialization may lead to information disclosure (tftp) (CVE-2021-3595) * libvirt: Insecure sVirt label generation (CVE-2021-3631) * libvirt: Improper locking on ACL failure in virStoragePoolLookupByTargetPath API (CVE-2021-3667) 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.

View original source

05 / REFERENCES

Further evidence