UpHeron
All vulnerabilities

Servers and applications

CVE-2014-7156

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.

Severity
Low 3.3
Published
2 Oct 2014
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.8% in the next 30 daysHigher than 58% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-264
Attack
From the same local network · No login needed
Attacker can
Slow it down
CVSS vector
AV:A/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.4.1
  • Version 4.4.0
  • Version 4.4.0-rc1
  • Version 4.3.1
All 19 release lines
  • Version 3.3.0
  • Version 3.3.1
  • Version 3.3.2
  • Version 4.1.0
  • Version 4.1.1
  • Version 4.1.2
  • Version 4.1.3
  • Version 4.1.4
  • Version 4.1.5
  • Version 4.1.6.1
  • Version 4.2.0
  • Version 4.2.1
  • Version 4.2.2
  • Version 4.2.3
  • Version 4.3.0
  • Version 4.3.1
  • Version 4.4.0-rc1
  • Version 4.4.0
  • Version 4.4.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2014-7156
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2014-7156