Your submission was sent successfully! Close

CVE-2021-20257

Published: 23 February 2021

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles 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: 6.5

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
bionic
Released (1:2.11+dfsg-1ubuntu7.37)
focal
Released (1:4.2-3ubuntu6.17)
groovy
Released (1:5.0-5ubuntu9.9)
hirsute Not vulnerable
(1:5.2+dfsg-9ubuntu3)
impish Not vulnerable
(1:5.2+dfsg-9ubuntu3)
jammy Not vulnerable
(1:5.2+dfsg-9ubuntu3)
precise Does not exist

trusty Needed

upstream Needs triage

xenial Needed

Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=3de46e6fc489c52c9431a8a832ad8170a7569bd8
qemu-kvm
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Ignored
(end of ESM support, was deferred [2021-06-09])
trusty Does not exist

upstream Needs triage

xenial Does not exist