CVE-2021-20196

Published: 26 May 2021

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.

Priority

Low

CVSS 3 base score: 6.5

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.04 (Hirsute Hippo) Deferred
(2021-06-09)
Ubuntu 20.10 (Groovy Gorilla) Deferred
(2021-06-09)
Ubuntu 20.04 LTS (Focal Fossa) Deferred
(2021-06-09)
Ubuntu 18.04 LTS (Bionic Beaver) Deferred
(2021-06-09)
Ubuntu 16.04 ESM (Xenial Xerus) Deferred
(2021-06-09)
Ubuntu 14.04 ESM (Trusty Tahr) Deferred
(2021-06-09)
qemu-kvm
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.04 (Hirsute Hippo) Does not exist

Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

xen
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.04 (Hirsute Hippo) Needs triage

Ubuntu 20.10 (Groovy Gorilla) Needs triage

Ubuntu 20.04 LTS (Focal Fossa) Needs triage

Ubuntu 18.04 LTS (Bionic Beaver) Needs triage

Ubuntu 16.04 ESM (Xenial Xerus) Needs triage

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Binaries built from this source package are in Universe and so are supported by the community.