diff mbox series

[14/14] wifi: mac80211: mesh: check element parsing succeeded

Message ID 20231211085121.93dea364f3d3.Ie87781c6c48979fb25a744b90af4a33dc2d83a28@changeid (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series cfg80211/mac80211 patches from our internal tree 2023-12-10 | expand

Commit Message

Miri Korenblit Dec. 11, 2023, 7:05 a.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

ieee802_11_parse_elems() can return NULL, so we must
check for the return value.

Fixes: 5d24828d05f3 ("mac80211: always allocate struct ieee802_11_elems")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 net/mac80211/mesh_plink.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index efffde7e5695..28bf794f67f8 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -1247,6 +1247,8 @@  void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata,
 			return;
 	}
 	elems = ieee802_11_parse_elems(baseaddr, len - baselen, true, NULL);
-	mesh_process_plink_frame(sdata, mgmt, elems, rx_status);
-	kfree(elems);
+	if (elems) {
+		mesh_process_plink_frame(sdata, mgmt, elems, rx_status);
+		kfree(elems);
+	}
 }