Comment 0 for bug 1652489

After installing the latest updates on December 23, 2016, the cinnamon-screensaver (AKA "lock screen") sometimes will not require a password to unlock! Anyone can bypass the lock screen due to this critical bug. Another issue after installing these updates is that locking the session can sometimes freeze the entire system, which will require a hard reboot or the "Sys Resc RSEISUB" key combination.

Here is the forum post as a reference: https://forums.linuxmint.com/viewtopic.php?p=1256731

SYSTEM INFORMATION:
Linux Mint 18.1 Cinnamon

UNAME -A:
4.4.0-57-generic #78-Ubuntu SMP Fri Dec 9 23:50:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

INXI -G:
Graphics: Card: Intel 3rd Gen Core processor Graphics Controller
           Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa) Resolution: 1920x1080@60.00hz
           GLX Renderer: Mesa DRI Intel Ivybridge Mobile GLX Version: 3.0 Mesa 11.2.0

APT HISTORY:
Commit Log for Fri Dec 23 09:01:26 2016

Upgraded the following packages:
cinnamon (3.2.6+serena) to 3.2.7+serena
cinnamon-common (3.2.6+serena) to 3.2.7+serena
cinnamon-screensaver (3.2.9+serena) to 3.2.12+serena <--- DID THIS CAUSE THESE NEW ISSUES?
cinnamon-screensaver-x-plugin (3.2.9+serena) to 3.2.12+serena <--- DID THIS CAUSE THESE NEW ISSUES?
libcscreensaver0 (3.2.9+serena) to 3.2.12+serena <--- DID THIS CAUSE THESE NEW ISSUES?
mdm (2.0.16+serena) to 2.0.17+serena <--- DID THIS CAUSE THESE NEW ISSUES?
mintbackup (2.2.5) to 2.2.6

Installed the following packages:
cinnamon-screensaver-pam-helper (3.2.12+serena) <--- DID THIS CAUSE THESE NEW ISSUES?