CVE-2021-20196

CVE Details

Release Date:2021-05-26

Description


A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

See more information about CVE-2021-20196 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: 6.5 Base Metrics: AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Access Vector: Local network Attack Complexity: Low
Privileges Required: Low User Interaction: None
Scope: Changed Confidentiality Impact: None
Integrity Impact: None Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 7 (qemu)ELSA-2022-91232022-02-05
Oracle Linux version 8 (hivex)ELSA-2022-17592022-05-17
Oracle Linux version 8 (hivex)ELSA-2022-91722022-02-25
Oracle Linux version 8 (libguestfs)ELSA-2022-17592022-05-17
Oracle Linux version 8 (libguestfs)ELSA-2022-91722022-02-25
Oracle Linux version 8 (libguestfs-winsupport)ELSA-2022-17592022-05-17
Oracle Linux version 8 (libguestfs-winsupport)ELSA-2022-91722022-02-25
Oracle Linux version 8 (libiscsi)ELSA-2022-17592022-05-17
Oracle Linux version 8 (libiscsi)ELSA-2022-91722022-02-25
Oracle Linux version 8 (libnbd)ELSA-2022-17592022-05-17
Oracle Linux version 8 (libnbd)ELSA-2022-91722022-02-25
Oracle Linux version 8 (libtpms)ELSA-2022-17592022-05-17
Oracle Linux version 8 (libvirt)ELSA-2022-17592022-05-17
Oracle Linux version 8 (libvirt)ELSA-2022-91722022-02-25
Oracle Linux version 8 (libvirt-dbus)ELSA-2022-17592022-05-17
Oracle Linux version 8 (libvirt-dbus)ELSA-2022-91722022-02-25
Oracle Linux version 8 (libvirt-python)ELSA-2022-17592022-05-17
Oracle Linux version 8 (libvirt-python)ELSA-2022-91722022-02-25
Oracle Linux version 8 (nbdkit)ELSA-2022-17592022-05-17
Oracle Linux version 8 (nbdkit)ELSA-2022-91722022-02-25
Oracle Linux version 8 (netcf)ELSA-2022-17592022-05-17
Oracle Linux version 8 (netcf)ELSA-2022-91722022-02-25
Oracle Linux version 8 (perl-Sys-Virt)ELSA-2022-17592022-05-17
Oracle Linux version 8 (perl-Sys-Virt)ELSA-2022-91722022-02-25
Oracle Linux version 8 (qemu-kvm)ELSA-2022-17592022-05-17
Oracle Linux version 8 (qemu-kvm)ELSA-2022-91722022-02-25
Oracle Linux version 8 (seabios)ELSA-2022-17592022-05-17
Oracle Linux version 8 (seabios)ELSA-2022-91722022-02-25
Oracle Linux version 8 (sgabios)ELSA-2022-17592022-05-17
Oracle Linux version 8 (sgabios)ELSA-2022-91722022-02-25
Oracle Linux version 8 (supermin)ELSA-2022-17592022-05-17
Oracle Linux version 8 (supermin)ELSA-2022-91722022-02-25
Oracle Linux version 8 (swtpm)ELSA-2022-17592022-05-17
Oracle Linux version 8 (virt-v2v)ELSA-2022-17592022-05-17



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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