Improper input validation in Xen

CVE-2016-3961

Xen and the Linux kernel through 4.5.x do not properly suppress hugetlbfs support in x86 PV guests, which allows local PV guest OS users to cause a denial of service (guest OS crash) by attempting to access a hugetlbfs mapped area.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.005 (40.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2016-3961?
CVE-2016-3961 is a medium-severity vulnerability in Xen, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2016-04-15.
How severe is CVE-2016-3961?
Medium severity. CVSS v3 base score is 5.5 out of 10.