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authorJohannes Berg <johannes.berg@intel.com>2016-02-26 22:13:40 +0100
committerJohannes Berg <johannes.berg@intel.com>2016-03-01 15:42:01 +0100
commit9acc54beb474c81148e2946603d141cf8716b19f (patch)
treeddca7cb7698c0d06c8b9df5a589014e40359d3d6 /net/mac802154/tx.c
parentb86071528f3261ab592fad5b9b1a02aea3dcabf3 (diff)
downloadlinux-9acc54beb474c81148e2946603d141cf8716b19f.tar.bz2
mac80211: check PN correctly for GCMP-encrypted fragmented MPDUs
Just like for CCMP we need to check that for GCMP the fragments have PNs that increment by one; the spec was updated to fix this security issue and now has the following text: The receiver shall discard MSDUs and MMPDUs whose constituent MPDU PN values are not incrementing in steps of 1. Adapt the code for CCMP to work for GCMP as well, luckily the relevant fields already alias each other so no code duplication is needed (just check the aliasing with BUILD_BUG_ON.) Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac802154/tx.c')
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