[Samba] pam_smbpass causing corruption with su

[Caesar Samsi]

https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1257186

 

This bug has a long history since 4.1.6 and I can confirm with 4.2.1 

 

I've isolated to the line:

 

auth optional pam_smbpass.so migrate

 

Configured in /etc/pam.d/common-auth

 

That line is added by libpam-smbpass package installation and also by using
pam-auth-update to enable SMB Password Synchronization

 

For 4.2.1 the error however occurs in su:

 

*** Error in `su': double free or corruption (fasttop): 0x000000000110d800
***

Aborted

 

Which happens after the password is entered.