CVE-2021-20255

Published: 09 March 2021

A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Priority

Medium

CVSS 3 base score: 5.5

Status

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

Ubuntu 21.10 (Impish Indri) Deferred
(2021-09-16)
Ubuntu 21.04 (Hirsute Hippo) Deferred
(2021-09-16)
Ubuntu 20.04 LTS (Focal Fossa) Deferred
(2021-09-16)
Ubuntu 18.04 LTS (Bionic Beaver) Deferred
(2021-09-16)
Ubuntu 16.04 ESM (Xenial Xerus) Deferred
(2021-09-16)
Ubuntu 14.04 ESM (Trusty Tahr) Deferred
(2021-09-16)
qemu-kvm
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.10 (Impish Indri) Does not exist

Ubuntu 21.04 (Hirsute Hippo) 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