Update 4.10 -> 4.12:
For Exim, this includes an enormous number of fixes. Most of these are
for esoteric configurations, although if you're bitten by them, you're
The fixes also include closing up a buffer overflow that is not believed
to be exploitable, and a format string vulnerability that was only
exploitable by an Exim admin user, but then provided root access.
For Eximon, this just rationalizes a patch we carried locally for ages.