Resource Management Errors Affecting xen package, versions <4.5.0-1ubuntu4.3


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-UBUNTU1504-XEN-366506
  • published30 Oct 2015
  • disclosed30 Oct 2015

Introduced: 30 Oct 2015

CVE-2015-7813  (opens in a new tab)
CWE-399  (opens in a new tab)

How to fix?

Upgrade Ubuntu:15.04 xen to version 4.5.0-1ubuntu4.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Ubuntu. See How to fix? for Ubuntu:15.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1