Mitigate CVE-2017-6074

Summary:
References:

• https://access.redhat.com/security/cve/cve-2017-6074
• https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-6074.html

Test Plan: deploy, ls

Reviewers: dereckson

Reviewed By: dereckson

Subscribers: amj

Differential Revision: https://devcentral.nasqueron.org/D931