CVE-2018-6558
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).
Date published : 2018-08-23
https://github.com/google/fscrypt/commit/3022c1603d968c22f147b4a2c49c4637dd1be91b
https://github.com/google/fscrypt/commit/315f9b042237200174a1fb99427f74027e191d66