fscrypt: 0.2.3 -> 0.2.4 (security, CVE-2018-6558)
(cherry picked from commit 4f519e5dc8d41acfc31ded7b1bbb46b55aa23e3a)
Reason: Security update: "The pam_fscrypt module in fscrypt before 0.2.4
may incorrectly restore primary and supplementary group IDs to the
values associated with the root user, which allows attackers to gain
privileges via a successful login through certain applications that use
Linux-PAM (aka pam)."
