UpHeron
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Servers and applications

CVE-2014-8594

The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).

Severity
Medium 5.4
Published
19 Nov 2014
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
2.2% in the next 30 daysHigher than 82% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Improper input validation (CWE-20)
Attack
Over the network · Only under certain conditions · No login needed
Attacker can
Take it down
CVSS vector
AV:N/AC:H/Au:N/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.3.1
  • Version 4.3.0
  • Version 4.2.3
  • Version 4.2.2
All 18 release lines
  • Version 4.0.0
  • Version 4.0.1
  • Version 4.0.2
  • Version 4.0.3
  • Version 4.0.4
  • 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

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2014-8594
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2014-8594