Commit 5cc58b37 authored by Yuan Can's avatar Yuan Can Committed by Johannes Berg
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wifi: nl80211: Add checks for nla_nest_start() in nl80211_send_iface() 



As the nla_nest_start() may fail with NULL returned, the return value needs
to be checked.

Fixes: ce08cd34 ("wifi: nl80211: expose link information for interfaces")
Signed-off-by: default avatarYuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221129014211.56558-1-yuancan@huawei.com


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 278ab979

net/wireless/nl80211.c

+3 −0
Original line number Diff line number Diff line
@@ -3868,6 +3868,9 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flag 
			struct cfg80211_chan_def chandef = {};

			int ret;









			if (!link)









				goto nla_put_failure;

















			if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))









				goto nla_put_failure;









			if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,