UBUNTU-CVE-2014-7155

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2014-7155
Published: 02 Oct 2014, 14:55
Last modified:22 Apr 2026, 09:49

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Oct 2014, 14:55
Published
Vulnerability first disclosed
22 Apr 2026, 09:49
Last Modified
Vulnerability information updated

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.

Affected Systems

  • ubuntu•xen

    < 4.4.0-0ubuntu5.2

References (3)