CVE-2019-12155

Publication date 24 May 2019

Last updated 24 July 2024

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

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 Wörner 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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	21.04 hirsute	Fixed 1:4.2-1ubuntu1
	20.10 groovy	Fixed 1:4.2-1ubuntu1
	20.04 LTS focal	Fixed 1:4.2-1ubuntu1
	19.10 eoan	Fixed 1:4.0+dfsg-0ubuntu9.1
	19.04 disco	Fixed 1:3.1+dfsg-2ubuntu3.6
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Fixed 1:2.11+dfsg-1ubuntu7.20
	16.04 LTS xenial	Fixed 1:2.5+dfsg-5ubuntu10.42
	14.04 LTS trusty	Fixed 2.0.0+dfsg-2ubuntu1.47 Ubuntu Pro
qemu-kvm	21.04 hirsute	Not in release
	20.10 groovy	Not in release
	20.04 LTS focal	Not in release
	19.10 eoan	Not in release
	19.04 disco	Not in release
	18.10 cosmic	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
qemu	Upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=d52680fc932efb8a2f334cc6993e705ed1e31e99

Severity score breakdown

Parameter	Value
Base score	7.5 · High
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