From: Johannes Berg <johannes@sipsolutions.net>
To: linux-wireless@vger.kernel.org
Cc: Johannes Berg <johannes.berg@intel.com>,
Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Subject: [PATCH wireless 3/8] wifi: mac80211: mlme: fix memory leak
Date: Thu, 18 Apr 2024 10:52:21 +0200 [thread overview]
Message-ID: <20240418105220.458421e3bbff.Icb5b84cba3ea420794cf009cf18ec3d76e434736@changeid> (raw)
In-Reply-To: <20240418105220.90df97557702.I05d2228ce85c203b9f2d6da8538cc16dce46752a@changeid>
From: Johannes Berg <johannes.berg@intel.com>
When re-parsing the elements here (with changed mode), free
the original ones first to avoid leaking memory.
Fixes: 310c8387c638 ("wifi: mac80211: clean up connection process")
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
net/mac80211/mlme.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 98cb475a14c8..6fa3752b740e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -753,8 +753,10 @@ ieee80211_determine_chan_mode(struct ieee80211_sub_if_data *sdata,
}
/* the mode can only decrease, so this must terminate */
- if (ap_mode != conn->mode)
+ if (ap_mode != conn->mode) {
+ kfree(elems);
goto again;
+ }
mlme_link_id_dbg(sdata, link_id,
"connecting with %s mode, max bandwidth %d MHz\n",
--
2.44.0
next prev parent reply other threads:[~2024-04-18 8:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-18 8:52 [PATCH wireless 1/8] wifi: mac80211: fix idle calculation with multi-link Johannes Berg
2024-04-18 8:52 ` [PATCH wireless 2/8] wifi: mac80211: mlme: re-parse with correct mode Johannes Berg
2024-04-18 8:52 ` Johannes Berg [this message]
2024-04-18 8:52 ` [PATCH wireless 4/8] wifi: mac80211: mlme: re-parse if AP mode is less than client Johannes Berg
2024-04-18 8:52 ` [PATCH wireless 5/8] wifi: nl80211: don't free NULL coalescing rule Johannes Berg
2024-04-18 8:52 ` [PATCH wireless 6/8] wifi: mac80211_hwsim: init peer measurement result Johannes Berg
2024-04-18 8:52 ` [PATCH wireless 7/8] wifi: mac80211: remove link before AP Johannes Berg
2024-04-18 8:52 ` [PATCH wireless 8/8] wifi: mac80211: fix unaligned le16 access Johannes Berg
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