CVE-2020-27821

CVE Details

Release Date:2020-12-08

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.

See more information about CVE-2020-27821 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 6 Base Metrics: AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Access Vector: Local network Attack Complexity: Low
Privileges Required: High User Interaction: None
Scope: Changed Confidentiality Impact: None
Integrity Impact: None Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 7 (qemu)ELSA-2021-92852021-06-06
Oracle Linux version 8 (hivex)ELSA-2021-17622021-05-25
Oracle Linux version 8 (hivex)ELSA-2021-95682021-12-01
Oracle Linux version 8 (libguestfs)ELSA-2021-17622021-05-25
Oracle Linux version 8 (libguestfs)ELSA-2021-95682021-12-01
Oracle Linux version 8 (libguestfs-winsupport)ELSA-2021-17622021-05-25
Oracle Linux version 8 (libguestfs-winsupport)ELSA-2021-95682021-12-01
Oracle Linux version 8 (libiscsi)ELSA-2021-17622021-05-25
Oracle Linux version 8 (libiscsi)ELSA-2021-95682021-12-01
Oracle Linux version 8 (libnbd)ELSA-2021-17622021-05-25
Oracle Linux version 8 (libnbd)ELSA-2021-95682021-12-01
Oracle Linux version 8 (libvirt)ELSA-2021-17622021-05-25
Oracle Linux version 8 (libvirt)ELSA-2021-95682021-12-01
Oracle Linux version 8 (libvirt-dbus)ELSA-2021-17622021-05-25
Oracle Linux version 8 (libvirt-dbus)ELSA-2021-95682021-12-01
Oracle Linux version 8 (libvirt-python)ELSA-2021-17622021-05-25
Oracle Linux version 8 (libvirt-python)ELSA-2021-95682021-12-01
Oracle Linux version 8 (nbdkit)ELSA-2021-17622021-05-25
Oracle Linux version 8 (nbdkit)ELSA-2021-95682021-12-01
Oracle Linux version 8 (netcf)ELSA-2021-17622021-05-25
Oracle Linux version 8 (netcf)ELSA-2021-95682021-12-01
Oracle Linux version 8 (perl-Sys-Virt)ELSA-2021-17622021-05-25
Oracle Linux version 8 (perl-Sys-Virt)ELSA-2021-95682021-12-01
Oracle Linux version 8 (qemu-kvm)ELSA-2021-17622021-05-25
Oracle Linux version 8 (qemu-kvm)ELSA-2021-95682021-12-01
Oracle Linux version 8 (seabios)ELSA-2021-17622021-05-25
Oracle Linux version 8 (seabios)ELSA-2021-95682021-12-01
Oracle Linux version 8 (sgabios)ELSA-2021-17622021-05-25
Oracle Linux version 8 (sgabios)ELSA-2021-95682021-12-01
Oracle Linux version 8 (supermin)ELSA-2021-17622021-05-25
Oracle Linux version 8 (supermin)ELSA-2021-95682021-12-01



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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