ssl: fix duplicate dissections with multiple PDUs in a stream

The previous fix was incomplete and would still result in duplicate PDU
dissections starting from the second reassembled PDU in a TLS stream.
The reason for that is that "nxtseq" is the absolute offset within a TLS
application data stream where the current segment ends while the
reassembled PDU length ("ipfd_head->datalen") is likely smaller than
"nxtseq".

Note: this fix assumes that the there won't be another (partial) PDU
following a reassembled PDU in a single packet (that is, the condition
"nxtseq > msp->nxtpdu" is assumed not to occur). If that is not the
case, a different issue occurs which needs another fix (more work):
"Reassembly error, protocol SSL: Frame already added in first pass".

Change-Id: Ib546f6e85baa0670c2c6a31ee8de87422004ecf3
Bug: 14596
Fixes: v2.1.0rc0-1521-gcefd1d4910 ("ssl: avoid duplicate PDU dissections")
Reviewed-on: https://code.wireshark.org/review/26935
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>

0 files changed, 0 insertions, 0 deletions