Commit 0303b303 authored by Eric Dumazet's avatar Eric Dumazet Committed by Stefan Schmidt
Browse files

ieee802154: hwsim: avoid possible crash in hwsim_del_edge_nl() 



Both MAC802154_HWSIM_ATTR_RADIO_ID and MAC802154_HWSIM_ATTR_RADIO_EDGE
must be present to avoid a crash.

Fixes: f25da51f ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Stefan Schmidt <stefan@datenfreihafen.org>
Reported-by: default avatarsyzbot <syzkaller@googlegroups.com>
Acked-by: default avatarAlexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210621180244.882076-1-eric.dumazet@gmail.com


Signed-off-by: default avatarStefan Schmidt <stefan@datenfreihafen.org>
parent 28a5501c

drivers/net/ieee802154/mac802154_hwsim.c

+1 −1
Original line number Diff line number Diff line
@@ -480,7 +480,7 @@ static int hwsim_del_edge_nl(struct sk_buff *msg, struct genl_info *info) 
	struct hwsim_edge *e;

	u32 v0, v1;



	if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID] &&

	if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID] ||

	    !info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE])

		return -EINVAL;