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Commit 92a62532 authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
Browse files

Staging: ozwpan: prevent bogus dereference 



app_id comes from the network and can't be trusted.  If it's zero then
it will lead to a kernel crash.

Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Acked-by: default avatarChris Kelly <ckelly@ozmodevices.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f2e33266

drivers/staging/ozwpan/ozpd.c

+1 −1
Original line number Diff line number Diff line
@@ -806,7 +806,7 @@ void oz_apps_term(void) 
void oz_handle_app_elt(struct oz_pd *pd, u8 app_id, struct oz_elt *elt)

{

	struct oz_app_if *ai;

	if (app_id > OZ_APPID_MAX)

	if (app_id == 0 || app_id > OZ_APPID_MAX)

		return;

	ai = &g_app_if[app_id-1];

	ai->rx(pd, elt);