CVE-2015-7972
EPSS 0.07%
Description
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."
How to fix CVE-2015-7972
To remediate CVE-2015-7972, upgrade the affected package to a fixed version below.
- Debian/xen—upgrade to 4.6.0-1 or later
Is CVE-2015-7972 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.6.0-1