Rapid7 Vulnerability & Exploit Database

Gentoo Linux: CVE-2014-7155: Xen: Denial of service

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Gentoo Linux: CVE-2014-7155: Xen: Denial of service

Severity
6
CVSS
(AV:A/AC:L/Au:N/C:P/I:P/A:P)
Published
10/02/2014
Created
07/25/2018
Added
10/30/2017
Modified
05/28/2021

Description

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.

Solution(s)

  • gentoo-linux-upgrade-app-emulation-xen

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