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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: f25da51fdc ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Stefan Schmidt <stefan@datenfreihafen.org>
Reported-by: syzbot <syzkaller@googlegroups.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210621180244.882076-1-eric.dumazet@gmail.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
This commit is contained in:
Eric Dumazet 2021-06-21 11:02:44 -07:00 committed by Stefan Schmidt
parent 28a5501c33
commit 0303b30375
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ieee802154/mac802154_hwsim.c
View File

@ -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;