diff options
| author | Benjamin Berg <benjamin.berg@intel.com> | 2026-05-05 16:15:40 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2026-05-05 19:07:39 +0300 |
| commit | ac8eb3e18f41e2cc8492cc1d358bcb786c850270 (patch) | |
| tree | 3b83de288d8a62b4cb361011ff0cdfe13a08fb5d | |
| parent | 714ae274e869e197fef21c037156fe6e37ce9e7a (diff) | |
| download | linux-ac8eb3e18f41e2cc8492cc1d358bcb786c850270.tar.xz | |
wifi: mac80211: use safe list iteration in radar detect work
The call to ieee80211_dfs_cac_cancel can cause the iterated chanctx to
be freed and removed from the list. Guard against this to avoid a
slab-use-after-free error.
Cc: stable@vger.kernel.org
Fixes: bca8bc0399ac ("wifi: mac80211: handle ieee80211_radar_detected() for MLO")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://patch.msgid.link/20260505151539.236d63a1b736.I35dbb9e96a2d4a480be208770fdd99ba3b817b79@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | net/mac80211/util.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index b093bc203c81..2529b01e2cd5 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -3700,11 +3700,11 @@ void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, struct ieee80211_local *local = container_of(work, struct ieee80211_local, radar_detected_work); struct cfg80211_chan_def chandef; - struct ieee80211_chanctx *ctx; + struct ieee80211_chanctx *ctx, *tmp; lockdep_assert_wiphy(local->hw.wiphy); - list_for_each_entry(ctx, &local->chanctx_list, list) { + list_for_each_entry_safe(ctx, tmp, &local->chanctx_list, list) { if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) continue; |