diff options
| author | Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be> | 2021-05-11 20:02:44 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2021-05-11 20:13:03 +0200 |
| commit | a1d5ff5651ea592c67054233b14b30bf4452999c (patch) | |
| tree | ed74459ba67456ba80a693552b597f0d5b8d00fe /net/mac80211 | |
| parent | 94034c40ab4a3fcf581fbc7f8fdf4e29943c4a24 (diff) | |
mac80211: properly handle A-MSDUs that start with an RFC 1042 header
Properly parse A-MSDUs whose first 6 bytes happen to equal a rfc1042
header. This can occur in practice when the destination MAC address
equals AA:AA:03:00:00:00. More importantly, this simplifies the next
patch to mitigate A-MSDU injection attacks.
Cc: stable@vger.kernel.org
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20210511200110.0b2b886492f0.I23dd5d685fe16d3b0ec8106e8f01b59f499dffed@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/rx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 531232b91bc4..f14d32a5001d 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2682,7 +2682,7 @@ __ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx, u8 data_offset) if (ieee80211_data_to_8023_exthdr(skb, ðhdr, rx->sdata->vif.addr, rx->sdata->vif.type, - data_offset)) + data_offset, true)) return RX_DROP_UNUSABLE; ieee80211_amsdu_to_8023s(skb, &frame_list, dev->dev_addr, |