3.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: Mathias Krause <[email protected]> [ Upstream commit 9344a972961d1a6d2c04d9008b13617bcb6ec2ef ] The RFCOMM code fails to initialize the trailing padding byte of struct sockaddr_rc added for alignment. It that for leaks one byte kernel stack via the getsockname() syscall. Add an explicit memset(0) before filling the structure to avoid the info leak. Signed-off-by: Mathias Krause <[email protected]> Cc: Marcel Holtmann <[email protected]> Cc: Gustavo Padovan <[email protected]> Cc: Johan Hedberg <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- net/bluetooth/rfcomm/sock.c | 1 + 1 file changed, 1 insertion(+) --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -544,6 +544,7 @@ static int rfcomm_sock_getname(struct so BT_DBG("sock %p, sk %p", sock, sk); + memset(sa, 0, sizeof(*sa)); sa->rc_family = AF_BLUETOOTH; sa->rc_channel = rfcomm_pi(sk)->channel; if (peer) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
