tree f20dd64cce42007879a319b5db23962c88acb7bb
parent 6b2f66dc9cabb7eb348587fdac6b3a64545e2d5f
author Matthew Daley <mattjd@gmail.com> 1318617905 +0000
committer Greg Kroah-Hartman <gregkh@suse.de> 1319519417 +0200

x25: Prevent skb overreads when checking call user data

commit 7f81e25befdfb3272345a2e775f520e1d515fa20 upstream.

x25_find_listener does not check that the amount of call user data given
in the skb is big enough in per-socket comparisons, hence buffer
overreads may occur.  Fix this by adding a check.

Signed-off-by: Matthew Daley <mattjd@gmail.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Acked-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>