vulnerability
Oracle Linux: CVE-2021-20257: ELSA-2021-5238: virt:ol and virt-devel:ol security update (LOW) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 1 | (AV:L/AC:L/Au:M/C:N/I:N/A:P) | Feb 10, 2021 | Jun 29, 2021 | Feb 24, 2026 |
Severity
1
CVSS
(AV:L/AC:L/Au:M/C:N/I:N/A:P)
Published
Feb 10, 2021
Added
Jun 29, 2021
Modified
Feb 24, 2026
Description
An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Solutions
oracle-linux-upgrade-hivexoracle-linux-upgrade-hivex-develoracle-linux-upgrade-ivshmem-toolsoracle-linux-upgrade-libguestfsoracle-linux-upgrade-libguestfs-bash-completionoracle-linux-upgrade-libguestfs-benchmarkingoracle-linux-upgrade-libguestfs-develoracle-linux-upgrade-libguestfs-gfs2oracle-linux-upgrade-libguestfs-gobjectoracle-linux-upgrade-libguestfs-gobject-develoracle-linux-upgrade-libguestfs-inspect-iconsoracle-linux-upgrade-libguestfs-javaoracle-linux-upgrade-libguestfs-java-develoracle-linux-upgrade-libguestfs-javadocoracle-linux-upgrade-libguestfs-man-pages-jaoracle-linux-upgrade-libguestfs-man-pages-ukoracle-linux-upgrade-libguestfs-rescueoracle-linux-upgrade-libguestfs-rsyncoracle-linux-upgrade-libguestfs-toolsoracle-linux-upgrade-libguestfs-tools-coracle-linux-upgrade-libguestfs-winsupportoracle-linux-upgrade-libguestfs-xfsoracle-linux-upgrade-libiscsioracle-linux-upgrade-libiscsi-develoracle-linux-upgrade-libiscsi-utilsoracle-linux-upgrade-libnbdoracle-linux-upgrade-libnbd-develoracle-linux-upgrade-libvirtoracle-linux-upgrade-libvirt-adminoracle-linux-upgrade-libvirt-bash-completionoracle-linux-upgrade-libvirt-clientoracle-linux-upgrade-libvirt-daemonoracle-linux-upgrade-libvirt-daemon-config-networkoracle-linux-upgrade-libvirt-daemon-config-nwfilteroracle-linux-upgrade-libvirt-daemon-driver-interfaceoracle-linux-upgrade-libvirt-daemon-driver-networkoracle-linux-upgrade-libvirt-daemon-driver-nodedevoracle-linux-upgrade-libvirt-daemon-driver-nwfilteroracle-linux-upgrade-libvirt-daemon-driver-qemuoracle-linux-upgrade-libvirt-daemon-driver-secretoracle-linux-upgrade-libvirt-daemon-driver-storageoracle-linux-upgrade-libvirt-daemon-driver-storage-coreoracle-linux-upgrade-libvirt-daemon-driver-storage-diskoracle-linux-upgrade-libvirt-daemon-driver-storage-glusteroracle-linux-upgrade-libvirt-daemon-driver-storage-iscsioracle-linux-upgrade-libvirt-daemon-driver-storage-iscsi-directoracle-linux-upgrade-libvirt-daemon-driver-storage-logicaloracle-linux-upgrade-libvirt-daemon-driver-storage-mpathoracle-linux-upgrade-libvirt-daemon-driver-storage-rbdoracle-linux-upgrade-libvirt-daemon-driver-storage-scsioracle-linux-upgrade-libvirt-daemon-kvmoracle-linux-upgrade-libvirt-dbusoracle-linux-upgrade-libvirt-develoracle-linux-upgrade-libvirt-docsoracle-linux-upgrade-libvirt-libsoracle-linux-upgrade-libvirt-lock-sanlockoracle-linux-upgrade-libvirt-nssoracle-linux-upgrade-lua-guestfsoracle-linux-upgrade-nbdfuseoracle-linux-upgrade-nbdkitoracle-linux-upgrade-nbdkit-bash-completionoracle-linux-upgrade-nbdkit-basic-filtersoracle-linux-upgrade-nbdkit-basic-pluginsoracle-linux-upgrade-nbdkit-curl-pluginoracle-linux-upgrade-nbdkit-develoracle-linux-upgrade-nbdkit-example-pluginsoracle-linux-upgrade-nbdkit-gzip-pluginoracle-linux-upgrade-nbdkit-linuxdisk-pluginoracle-linux-upgrade-nbdkit-python-pluginoracle-linux-upgrade-nbdkit-serveroracle-linux-upgrade-nbdkit-ssh-pluginoracle-linux-upgrade-nbdkit-vddk-pluginoracle-linux-upgrade-nbdkit-xz-filteroracle-linux-upgrade-netcforacle-linux-upgrade-netcf-develoracle-linux-upgrade-netcf-libsoracle-linux-upgrade-ocaml-hivexoracle-linux-upgrade-ocaml-hivex-develoracle-linux-upgrade-ocaml-libguestfsoracle-linux-upgrade-ocaml-libguestfs-develoracle-linux-upgrade-ocaml-libnbdoracle-linux-upgrade-ocaml-libnbd-develoracle-linux-upgrade-perl-hivexoracle-linux-upgrade-perl-sys-guestfsoracle-linux-upgrade-perl-sys-virtoracle-linux-upgrade-python3-hivexoracle-linux-upgrade-python3-libguestfsoracle-linux-upgrade-python3-libnbdoracle-linux-upgrade-python3-libvirtoracle-linux-upgrade-qemuoracle-linux-upgrade-qemu-block-glusteroracle-linux-upgrade-qemu-block-iscsioracle-linux-upgrade-qemu-block-rbdoracle-linux-upgrade-qemu-commonoracle-linux-upgrade-qemu-guest-agentoracle-linux-upgrade-qemu-imgoracle-linux-upgrade-qemu-kvmoracle-linux-upgrade-qemu-kvm-block-curloracle-linux-upgrade-qemu-kvm-block-glusteroracle-linux-upgrade-qemu-kvm-block-iscsioracle-linux-upgrade-qemu-kvm-block-rbdoracle-linux-upgrade-qemu-kvm-block-sshoracle-linux-upgrade-qemu-kvm-commonoracle-linux-upgrade-qemu-kvm-coreoracle-linux-upgrade-qemu-kvm-testsoracle-linux-upgrade-qemu-system-aarch64oracle-linux-upgrade-qemu-system-aarch64-coreoracle-linux-upgrade-qemu-system-x86oracle-linux-upgrade-qemu-system-x86-coreoracle-linux-upgrade-ruby-hivexoracle-linux-upgrade-ruby-libguestfsoracle-linux-upgrade-seabiosoracle-linux-upgrade-seabios-binoracle-linux-upgrade-seavgabios-binoracle-linux-upgrade-sgabiosoracle-linux-upgrade-sgabios-binoracle-linux-upgrade-superminoracle-linux-upgrade-supermin-develoracle-linux-upgrade-virt-diboracle-linux-upgrade-virt-v2v
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.