This bug was fixed in the package pam - 1.1.8-3.2ubuntu2.1
--------------- pam (1.1.8-3.2ubuntu2.1) xenial; urgency=medium
* d/local/pam_getenv: - Fix "Unescaped left brace in regex" with Perl 5.22. (LP: #1538284)
-- Seyeong Kim <email address hidden> Thu, 05 Apr 2018 17:33:57 -0700
This bug was fixed in the package pam - 1.1.8-3.2ubuntu2.1
--------------- 3.2ubuntu2. 1) xenial; urgency=medium
pam (1.1.8-
* d/local/pam_getenv:
- Fix "Unescaped left brace in regex" with Perl 5.22. (LP: #1538284)
-- Seyeong Kim <email address hidden> Thu, 05 Apr 2018 17:33:57 -0700