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CVE-2021-3392

Published: 23 March 2021

A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request object 'req' from a pending requests queue. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. Versions between 2.10.0 and 5.2.0 are potentially affected.

Priority

Low

CVSS 3 base score: 3.2

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
Released (1:5.2+dfsg-9ubuntu3.1)
impish
Released (1:6.0+dfsg-1~ubuntu3)
jammy
Released (1:6.0+dfsg-1~ubuntu3)
precise Does not exist

trusty Needed

upstream Needs triage

xenial Needed

Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=3791642c8d60029adf9b00bcb4e34d7d8a1aea4d
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