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:
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@ -480,7 +480,7 @@ static int hwsim_del_edge_nl(struct sk_buff *msg, struct genl_info *info)
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struct hwsim_edge *e;
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struct hwsim_edge *e;
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u32 v0, v1;
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u32 v0, v1;
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if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID] &&
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if (!info->attrs[MAC802154_HWSIM_ATTR_RADIO_ID] ||
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!info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE])
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!info->attrs[MAC802154_HWSIM_ATTR_RADIO_EDGE])
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return -EINVAL;
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return -EINVAL;
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