tree ec67313b339dae7cdc376dcc3659ae8095b654f5
parent 5b394b2ddf0347bef56e50c69a58773c94343ff3
author Sven Eckelmann <sven@narfation.org> 1535720924 +0200
committer Simon Wunderlich <sw@simonwunderlich.de> 1536234887 +0200

batman-adv: Avoid probe ELP information leak

The probe ELPs for WiFi interfaces are expanded to contain at least
BATADV_ELP_MIN_PROBE_SIZE bytes. This is usually a lot more than the
number of bytes which the template ELP packet requires.

These extra padding bytes were not initialized and thus could contain data
which were previously stored at the same location. It is therefore required
to set it to some predefined or random values to avoid leaking private
information from the system transmitting these kind of packets.

Fixes: e4623c913508 ("batman-adv: Avoid probe ELP information leak")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>