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Servers and applications

CVE-2016-5242

The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.

Severity
Medium 5.6
Published
7 Jun 2016
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.3% in the next 30 daysHigher than 28% of CVEs. EPSS by FIRST, 11 Nov 2026
Attack
Needs local access · Only under certain conditions · Needs a user account · No user action needed
Attacker can
Take it down
CVSS vector
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.6.1
  • Version 4.6.0
  • Version 4.5.3
  • Version 4.5.2
All 12 release lines
  • Version 4.4.0-rc1
  • Version 4.4.0
  • Version 4.4.1
  • Version 4.4.2
  • Version 4.4.3
  • Version 4.4.4
  • Version 4.5.0
  • Version 4.5.1
  • Version 4.5.2
  • Version 4.5.3
  • Version 4.6.0
  • Version 4.6.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-5242
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-5242