diff options
| author | Yuan Can <yuancan@huawei.com> | 2022-11-29 02:42:11 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2022-12-01 13:50:21 +0100 |
| commit | 5cc58b376675981386c6192405fe887cd29c527a (patch) | |
| tree | c797c6b2f3c64483e34e40f76766f7d737c27821 /net/wireless | |
| parent | wifi: ieee80211: Do not open-code qos address offsets (diff) | |
| download | linux-5cc58b376675981386c6192405fe887cd29c527a.tar.xz linux-5cc58b376675981386c6192405fe887cd29c527a.zip | |
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: ce08cd344a00 ("wifi: nl80211: expose link information for interfaces")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221129014211.56558-1-yuancan@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 1ad0326ff4dc..33a82ecab9d5 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -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, |