[Pkg-gnupg-maint] Bug#503853: gnupg: Sometimes hangs on truncated binary input

[Daniel Leidert]

Hi,

The issue has been tracked down by the upstream authors. It is specific to architectures,
where ULONG_MAX != 0xffffffff (e.g. amd64). A loop is entered and never left.
It is caused by this test in g10/parse-packet.c (parse):

if (pktlen == 0xffffffff) {...}

A simple fix should be to include limits.h and use ULONG_MAX in the test. IMO this is
a quick and dirty fix suitable for Debian.

Regards, Daniel