On Fri, 2019-11-22 at 17:36:21 +0000, Alejandro Del Castillo wrote: > I was pretty mystified on what's different...then I realized that the > issue only happens when following symlinks on tmpfs (/tmp). Adding an > extra directory (tmp) to the dpkg-test example reproduces the failure. > > At the end of the email, I have a patch that modifies the tests to show > the failure (I tried attaching the patch to the email, but that made the > list bot swallow my message). > > Is this a know issue or expected behavior?
Ok, the problem would be due to /proc/sys/fs/protected_symlinks being set to 1. So, I guess this is expected in the sense that letting [od]pkg write into something with the properties of /tmp is insecure anyway, and it should not be done. :) Otherwise this is supported and should work. Thanks, Guillem
