Jim Borden authored Sep 23, 2020 and A Wireshark GitLab Utility committed Sep 23, 2020

Until now, mistakenly, the buffer for decompressing compressed BLIP messages
has been statically allocated as 16 Kb, but that is not valid behavior.
16 Kb is the maximum size of a _compressed_ frame.  In theory, due to the
ability to zipbomb, there is virtually no upper bound on what the maximum
size of an uncompressed frame could be.  However, to keep sanity, it has
been made into a preference with a reasonable default that is not likely to
be exceeded (64 Kb).  The behavior before for this was that wireshark would
crash because the dissector would return NULL for a decompressed buffer due
to error and then try to deference it later.  A null check has been added,
so that the behavior is now that the packet will show
'<Error decompressing message>' instead, and log why it couldn't handle the
compressed message.  Closes #16866.