CVE-2020-25723

Published: 18 November 2020

A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.

Priority

Medium

CVSS 3 base score: 3.2

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
Upstream
Released (1:5.2+dfsg-1)
Ubuntu 21.04 (Hirsute Hippo)
Released (1:5.2+dfsg-2ubuntu1)
Ubuntu 20.10 (Groovy Gorilla)
Released (1:5.0-5ubuntu9.2)
Ubuntu 20.04 LTS (Focal Fossa)
Released (1:4.2-3ubuntu6.10)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (1:2.11+dfsg-1ubuntu7.34)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1:2.5+dfsg-5ubuntu10.48)
Ubuntu 14.04 ESM (Trusty Tahr) Needs triage

Patches:
Upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=2fdb42d840400d58f2e706ecca82c142b97bcbd6
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