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Bluetooth: l2cap: fix 1 byte infoleak to userspace

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Structure l2cap_options has one padding byte between max_tx and
txwin_size fields.  This byte in "opts" is copied to userspace
uninitialized.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Vasiliy Kulikov 2011-02-10 20:59:42 +03:00 committed by Gustavo F. Padovan
parent 6d1d4ea4a8
commit e3fb592b15
1 changed files with 1 additions and 0 deletions
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net/bluetooth/l2cap_sock.c
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@ -392,6 +392,7 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us
switch (optname) {
case L2CAP_OPTIONS:
memset(&opts, 0, sizeof(opts));
opts.imtu = l2cap_pi(sk)->imtu;
opts.omtu = l2cap_pi(sk)->omtu;
opts.flush_to = l2cap_pi(sk)->flush_to;