On Mon, Jan 07, 2002 at 11:21:27AM -0800, Andrew Morgan wrote: > I'm not at all familiar with pam_xauth. Perhpas someone that ships it > can offer some insight into this problem? > > Thanks > > Andrew > Date: Thu, 3 Jan 2002 13:06:46 +0200 (IST) > From: Shlomi Fish <shlomif@vipe.technion.ac.il> > Subject: action.size can be used without previously being assigned to in > pam_xauth.c > To: <morgan@kernel.org> > > > In pam_xauth.c: > > The function do_file makes use of an action struct. One of the things it > does is trunacate its length to action.size and then mmap it. However, the > function mangle_refcount calls it without necessarily assigning a.size to > something. > > This causes su to generate a very large file under > ~/.xauth/refcount/root/localhost.localdomain/unix\:0 and then it dies with > a "Bus Error" signal. > > Please let me know when a fix is available. The current pam errata package for Red Hat Linux should fix this problem, as the pam_xauth module has had some radical surgery in the last few months, removing refcounting altogether in favor of using session-specific authority files. The advisory can be found on line at https://www.redhat.com/support/errata/RHBA-2001-149.html Cheers, Nalin
