All vulnerabilities

Servers and applications

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.

Severity
Medium 5.5
Published
15 Apr 2016
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.5% in the next 30 daysHigher than 43% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Improper input validation (CWE-20)
Attack
Needs local access · Needs a user account · No user action needed
Attacker can
Take it down
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Every version up to 4.5.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-3961
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-3961