Release Date: | 2021-05-26 |
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
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 |
Platform | Errata | Release Date |
Oracle Linux version 7 (qemu) | ELSA-2022-9123 | 2022-02-05 |
Oracle Linux version 8 (hivex) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (hivex) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (libguestfs) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (libguestfs) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (libiscsi) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (libiscsi) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (libnbd) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (libnbd) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (libtpms) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (libvirt) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (libvirt) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (libvirt-dbus) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (libvirt-dbus) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (libvirt-python) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (libvirt-python) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (nbdkit) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (nbdkit) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (netcf) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (netcf) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (qemu-kvm) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (qemu-kvm) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (seabios) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (seabios) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (sgabios) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (sgabios) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (supermin) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (supermin) | ELSA-2022-9172 | 2022-02-25 |
Oracle Linux version 8 (swtpm) | ELSA-2022-1759 | 2022-05-17 |
Oracle Linux version 8 (virt-v2v) | ELSA-2022-1759 | 2022-05-17 |
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