CVE-2014-7156

Publication date 2 October 2014

Last updated 24 July 2024

Ubuntu priority

Description

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
xen	15.04 vivid	Fixed 4.4.1-3ubuntu1
	14.10 utopic	Fixed 4.4.0-0ubuntu8
	14.04 LTS trusty	Fixed 4.4.0-0ubuntu5.2
	12.04 LTS precise	Fixed 4.1.6.1-0ubuntu0.12.04.3
	10.04 LTS lucid	Not in release
xen-3.3	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Ignored end of life

How can I get the fixes?
What do statuses mean?

Notes

mdeslaur

3.3+

References

MITRE
NVD
Launchpad
Debian

Other references

http://xenbits.xen.org/xsa/advisory-106.html
https://www.cve.org/CVERecord?id=CVE-2014-7156