CVE-2014-7155

kernel: xen: Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation (XSA-105)

Published Oct 2, 2014 CVSS 2.0 · 5.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DSA Debian DSA DSA-3041-1 xen security update
EUVD EUVD EUVD-2014-7032 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.
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 6, 2024, 12:40 PM
Reserved
Sep 24, 2014, 12:00 AM
Status
Modified
Published
Oct 2, 2014, 2:55 PM
Modified
Jun 17, 2026, 12:14 AM
Severity
Important
Public date
Sep 23, 2014, 12:00 AM