Resource Management Errors Affecting xen package, versions <4.1.6.1-0ubuntu0.12.04.7


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-UBUNTU1204-XEN-365770
  • published30 Oct 2015
  • disclosed30 Oct 2015

Introduced: 30 Oct 2015

CVE-2015-7972  (opens in a new tab)
CWE-399  (opens in a new tab)

How to fix?

Upgrade Ubuntu:12.04 xen to version 4.1.6.1-0ubuntu0.12.04.7 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:12.04 relevant fixed versions and status.

The (1) libxl_set_memory_target function in tools/libxl/libxl.c and (2) libxl__build_post function in tools/libxl/libxl_dom.c in Xen 3.4.x through 4.6.x do not properly calculate the balloon size when using the populate-on-demand (PoD) system, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors related to "heavy memory pressure."

CVSS Scores

version 3.1