diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2021-05-11 20:02:48 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2021-05-11 20:13:45 +0200 |
| commit | bf30ca922a0c0176007e074b0acc77ed345e9990 (patch) | |
| tree | a641f6bf65a98f802e6f0f8f8374b4d1ca89930d /net/mac80211/ieee80211_i.h | |
| parent | mac80211: add fragment cache to sta_info (diff) | |
| download | linux-bf30ca922a0c0176007e074b0acc77ed345e9990.tar.xz linux-bf30ca922a0c0176007e074b0acc77ed345e9990.zip | |
mac80211: check defrag PN against current frame
As pointed out by Mathy Vanhoef, we implement the RX PN check
on fragmented frames incorrectly - we check against the last
received PN prior to the new frame, rather than to the one in
this frame itself.
Prior patches addressed the security issue here, but in order
to be able to reason better about the code, fix it to really
compare against the current frame's PN, not the last stored
one.
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210511200110.bfbc340ff071.Id0b690e581da7d03d76df90bb0e3fd55930bc8a0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/ieee80211_i.h')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 4c714375bad0..214404a558fb 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -223,8 +223,15 @@ struct ieee80211_rx_data { */ int security_idx; - u32 tkip_iv32; - u16 tkip_iv16; + union { + struct { + u32 iv32; + u16 iv16; + } tkip; + struct { + u8 pn[IEEE80211_CCMP_PN_LEN]; + } ccm_gcm; + }; }; struct ieee80211_csa_settings { |