diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2023-12-11 09:05:30 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2023-12-12 10:14:57 +0100 |
| commit | 98849ba2aa9db46e62720fb686a9d63ed9887806 (patch) | |
| tree | 3dd6b9f65091450b3cdee1d3380365b9ccd0d6eb /net/mac80211 | |
| parent | 63bafd9d5421959b2124dd940ed8d7462d99f449 (diff) | |
wifi: mac80211: check defragmentation succeeded
We need to check that cfg80211_defragment_element()
didn't return an error, since it can fail due to bad
input, and we didn't catch that before.
Fixes: 8eb8dd2ffbbb ("wifi: mac80211: Support link removal using Reconfiguration ML element")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231211085121.8595a6b67fc0.I1225edd8f98355e007f96502e358e476c7971d8c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/mlme.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 887b496f2b81..c8998cf01b7a 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -5782,7 +5782,7 @@ static void ieee80211_ml_reconfiguration(struct ieee80211_sub_if_data *sdata, { const struct ieee80211_multi_link_elem *ml; const struct element *sub; - size_t ml_len; + ssize_t ml_len; unsigned long removed_links = 0; u16 link_removal_timeout[IEEE80211_MLD_MAX_NUM_LINKS] = {}; u8 link_id; @@ -5798,6 +5798,8 @@ static void ieee80211_ml_reconfiguration(struct ieee80211_sub_if_data *sdata, elems->scratch + elems->scratch_len - elems->scratch_pos, WLAN_EID_FRAGMENT); + if (ml_len < 0) + return; elems->ml_reconf = (const void *)elems->scratch_pos; elems->ml_reconf_len = ml_len; |