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CVE-2014-7155

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 201412-42
Posted Dec 29, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201412-42 - Multiple vulnerabilities have been found in Xen, possibly resulting in Denial of Service. Versions less than 4.4.1-r2 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2014-7154, CVE-2014-7155, CVE-2014-7156, CVE-2014-7188
SHA-256 | 2db7505f2e7bc5f6baa362b0b62538e08d79d4290e93c6e8354e4d02ac99eacf
Debian Security Advisory 3041-1
Posted Oct 1, 2014
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3041-1 - Multiple security issues have been discovered in the Xen virtualisation solution which may result in denial of service, information disclosure or privilege escalation.

tags | advisory, denial of service, info disclosure
systems | linux, debian
advisories | CVE-2013-2072, CVE-2014-7154, CVE-2014-7155, CVE-2014-7156, CVE-2014-7188
SHA-256 | 4907d5b964f09a01c74ae0dc6ff9400295f8a8a13014c446cbbe4712c94984e9
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