[Dovecot] dovecot-auth process crashed during pam login

Hello!

We experienced crashes of the dovecot-auth process during user verification with pam_ssh.

After a little debugging I saw that pam_ssh and dovecot both provide a buffer_free() function. During cleanup of pam_ssh the buffer_free() from dovecot was called. The members of the buffer had all "out of bound" addresses.

After rename the buffer_free() in dovecot the pam login works fine.

Cheer, Elmar