CVE-2014-7155

2014-10-0200:00:00

ubuntu.com

5.8 Medium

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

26.7%

JSON

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x
and earlier does not properly check supervisor mode permissions, which
allows local HVM users to cause a denial of service (guest crash) or gain
guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT,
(3) LIDT, or (4) LMSW instruction.

Notes

Author	Note
mdeslaur	3.2.x+

OSVersionArchitecturePackageVersionFilename
ubuntu12.04noarchxen< 4.1.6.1-0ubuntu0.12.04.3UNKNOWN
ubuntu14.04noarchxen< 4.4.0-0ubuntu5.2UNKNOWN
ubuntu14.10noarchxen< 4.4.0-0ubuntu8UNKNOWN
ubuntu15.04noarchxen< 4.4.1-3ubuntu1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	12.04	noarch	xen	< 4.1.6.1-0ubuntu0.12.04.3	UNKNOWN
ubuntu	14.04	noarch	xen	< 4.4.0-0ubuntu5.2	UNKNOWN
ubuntu	14.10	noarch	xen	< 4.4.0-0ubuntu8	UNKNOWN
ubuntu	15.04	noarch	xen	< 4.4.1-3ubuntu1	UNKNOWN