diff options
| author |   Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be> | 2021-05-11 20:02:44 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-03 08:59:01 +0200 |
| commit | 5fe9fae1220e894dd4d1320c6253adebdb80721d (patch) | |
| tree | 8c808e325262c8af4974239f426336219c021312 /include | |
| parent | mac80211: prevent mixed key and fragment cache attacks (diff) | |
| download | wireguard-linux-5fe9fae1220e894dd4d1320c6253adebdb80721d.tar.xz wireguard-linux-5fe9fae1220e894dd4d1320c6253adebdb80721d.zip | |
mac80211: properly handle A-MSDUs that start with an RFC 1042 header
commit a1d5ff5651ea592c67054233b14b30bf4452999c upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/cfg80211.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 68782ba8b6e8..69b9ccbe1ad0 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -5194,7 +5194,7 @@ unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr); */ int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr, const u8 *addr, enum nl80211_iftype iftype, - u8 data_offset); + u8 data_offset, bool is_amsdu); /** * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 @@ -5206,7 +5206,7 @@ int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr, static inline int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, enum nl80211_iftype iftype) { - return ieee80211_data_to_8023_exthdr(skb, NULL, addr, iftype, 0); + return ieee80211_data_to_8023_exthdr(skb, NULL, addr, iftype, 0, false); } /** |