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CVE-2020-14364

Published: 24 August 2020

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.

Priority

Medium

CVSS 3 base score: 5.0

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
bionic
Released (1:2.11+dfsg-1ubuntu7.32)
focal
Released (1:4.2-3ubuntu6.6)
groovy
Released (1:5.0-5ubuntu9)
hirsute
Released (1:5.0-5ubuntu9)
precise Does not exist

trusty
Released (2.0.0+dfsg-2ubuntu1.47+esm1)
upstream Needs triage

xenial
Released (1:2.5+dfsg-5ubuntu10.46)
qemu-kvm
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

precise Ignored
(end of ESM support, was needed)
trusty Does not exist

upstream Needs triage

xenial Does not exist