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Servers and applications

CVE-2012-4538

The HVMOP_pagetable_dying hypercall in Xen 4.0, 4.1, and 4.2 does not properly check the pagetable state when running on shadow pagetables, which allows a local HVM guest OS to cause a denial of service (hypervisor crash) via unspecified vectors.

Severity
Medium 4.9
Published
24 Nov 2012
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.4% in the next 30 daysHigher than 39% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Improper input validation (CWE-20)
Attack
Needs local access · No login needed
Attacker can
Take it down
CVSS vector
AV:L/AC:L/Au:N/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.0.0
  • Version 4.1.0
  • Version 4.2.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2012-4538
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2012-4538