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Servers and applications

CVE-2014-5146

Certain MMU virtualization operations in Xen 4.2.x through 4.4.x before the xsa97-hap patch, when using Hardware Assisted Paging (HAP), are not preemptible, which allows local HVM guest to cause a denial of service (vcpu consumption) by invoking these operations, which process every page assigned to a guest, a different vulnerability than CVE-2014-5149.

Severity
Medium 4.7
Published
22 Aug 2014
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.4% in the next 30 daysHigher than 37% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-399
Attack
Needs local access · No login needed
Attacker can
Take it down
CVSS vector
AV:L/AC:M/Au:N/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.4.0
  • Version 4.3.1
  • Version 4.3.0
  • Version 4.2.3
All 7 release lines
  • 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

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2014-5146
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2014-5146