CVE-2018-5683

Publication date 23 January 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	21.04 hirsute	Fixed 1:2.11+dfsg-1ubuntu2
	20.10 groovy	Fixed 1:2.11+dfsg-1ubuntu2
	20.04 LTS focal	Fixed 1:2.11+dfsg-1ubuntu2
	19.10 eoan	Fixed 1:2.11+dfsg-1ubuntu2
	19.04 disco	Fixed 1:2.11+dfsg-1ubuntu2
	18.10 cosmic	Fixed 1:2.11+dfsg-1ubuntu2
	18.04 LTS bionic	Fixed 1:2.11+dfsg-1ubuntu2
	17.10 artful	Fixed 1:2.10+dfsg-0ubuntu3.5
	16.04 LTS xenial	Fixed 1:2.5+dfsg-5ubuntu10.22
	14.04 LTS trusty	Fixed 2.0.0+dfsg-2ubuntu1.39
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
	17.10 artful	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

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=191f59dc17396bb5a8da50f8c59b6e0a430711a4

Severity score breakdown

Parameter	Value
Base score	6.0 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	High
User interaction	None
Scope	Changed
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3575-1
QEMU vulnerabilities
20 February 2018