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CVE-2019-12155

Published: 24 May 2019

interface_release_resource in hw/display/qxl.c in QEMU 3.1.x through 4.0.0 has a NULL pointer dereference.

From the Ubuntu Security Team

Sergej Schumilo, Cornelius Aschermann and Simon W├Ârner discovered that the qxl paravirtual graphics driver implementation in QEMU contained a null pointer dereference. A local attacker in a guest could use this to cause a denial of service.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
bionic
Released (1:2.11+dfsg-1ubuntu7.20)
cosmic Ignored
(end of life)
disco
Released (1:3.1+dfsg-2ubuntu3.6)
eoan
Released (1:4.0+dfsg-0ubuntu9.1)
focal
Released (1:4.2-1ubuntu1)
groovy
Released (1:4.2-1ubuntu1)
hirsute
Released (1:4.2-1ubuntu1)
trusty
Released (2.0.0+dfsg-2ubuntu1.47)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (1:4.2-1)
xenial
Released (1:2.5+dfsg-5ubuntu10.42)
Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=d52680fc932efb8a2f334cc6993e705ed1e31e99
qemu-kvm
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H