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Servers and applications

CVE-2015-7813

Xen 4.4.x, 4.5.x, and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls, which allows local guests to cause a denial of service via a sequence of (1) HYPERVISOR_physdev_op hypercalls, which are not properly handled in the do_physdev_op function in arch/arm/physdev.c, or (2) HYPERVISOR_hvm_op hypercalls, which are not properly handled in the…

Severity
Low 2.1
Published
30 Oct 2015
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.4% in the next 30 daysHigher than 33% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-399
Attack
Needs local access · No login needed
Attacker can
Slow it down
CVSS vector
AV:L/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Description

Xen 4.4.x, 4.5.x, and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls, which allows local guests to cause a denial of service via a sequence of (1) HYPERVISOR_physdev_op hypercalls, which are not properly handled in the do_physdev_op function in arch/arm/physdev.c, or (2) HYPERVISOR_hvm_op hypercalls, which are not properly handled in the do_hvm_op function in arch/arm/hvm.c.

From NVD.

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.4.0-rc1
  • Version 4.4.0
  • Version 4.4.1
  • Version 4.5.0
  • Version 4.5.1
  • Version 4.6.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-7813
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-7813