Drawing lessons from fatal SELinux bug #1054350

Colin Walters walters at verbum.org
Sat Jan 25 19:32:11 UTC 2014

On Sat, 2014-01-25 at 10:37 -0800, Josh Stone wrote:

> Ok, sure, you can mount -o nosuid,noexec,nodev ... but this isn't the
> default for btrfs subvolume paths AFAIK.  It needs to be a conscious
> decision in whatever snapshot design we choose.

This is definitely an issue with the OSTree design, since everything
shares a physical partition (you can choose whatever block storage you
want) - it's just hard links.

I just filed:
for this.  

But really, now that KDBus is on the way, we can start using it for
system services to replace many setuid binaries, like unix_chkpwd
without losing the auditing trail and such that old indirection via
dbus-daemon required.  That's a subject for a different thread though.

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