diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2024-03-26 21:38:58 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-04-08 20:11:21 +0200 |
| commit | 7c1c73bf84c50b641449f9811e2196cdc3ca4a1b (patch) | |
| tree | bce0832fde605abfdf36981c4302bb67a0e30bf2 /net | |
| parent | 50108c352db70405b3d71d8099d0b3adc3b3352c (diff) | |
| download | linux-7c1c73bf84c50b641449f9811e2196cdc3ca4a1b.tar.gz | |
wifi: mac80211: check EHT/TTLM action frame length
Check the EHT action frame length before accessing
the action code, if it's not present then the frame
cannot be valid.
Reported-by: syzbot+75af45a00cf13243ba39@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/r/0000000000006c06870614886611@google.com/
Fixes: 8f500fbc6c65 ("wifi: mac80211: process and save negotiated TID to Link mapping request")
Link: https://msgid.link/20240326213858.19c84f34349f.I71b439f016b28f65284bb7646fe36343b74cbc9a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/rx.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index c1f8501384056d..685185dc04f970 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -3780,6 +3780,10 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) } break; case WLAN_CATEGORY_PROTECTED_EHT: + if (len < offsetofend(typeof(*mgmt), + u.action.u.ttlm_req.action_code)) + break; + switch (mgmt->u.action.u.ttlm_req.action_code) { case WLAN_PROTECTED_EHT_ACTION_TTLM_REQ: if (sdata->vif.type != NL80211_IFTYPE_STATION) |