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[01/15] wifi: ieee80211: check for NULL in ieee80211_mle_size_ok()

Message ID 20240318184907.4d983653cb8d.Ic3ea99b60c61ac2f7d38cb9fd202a03c97a05601@changeid (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series cfg80211/mac80211 patches from our internal tree 2024-03-18 | expand

Commit Message

Miri Korenblit March 18, 2024, 4:53 p.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

For simplicity, we may want to pass a NULL element, and
while we should then pass also a zero length, just be a
bit more careful here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 include/linux/ieee80211.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 3385a2cc5b09..a99f048404b8 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -5166,7 +5166,7 @@  static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
 	bool check_common_len = false;
 	u16 control;
 
-	if (len < fixed)
+	if (!data || len < fixed)
 		return false;
 
 	control = le16_to_cpu(mle->control);