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(parent: a31cf1c) | patch
mac80211: validate cipher scheme PN length better
authorJohannes Berg <johannes.berg@intel.com>
Tue, 5 May 2015 14:32:29 +0000 (16:32 +0200)
committerJohannes Berg <johannes.berg@intel.com>
Wed, 6 May 2015 11:30:00 +0000 (13:30 +0200)
commite3a55b5399d55200c024fe0c2984dc7ad049da44
tree3d01512741ad7b572f7ad25519680fe02dcce569tree | snapshot
parenta31cf1c69e89e0c2d5515b04aca313f1014a714dcommit | diff
mac80211: validate cipher scheme PN length better

Currently, a cipher scheme can advertise an arbitrarily long
sequence counter, but mac80211 only supports up to 16 bytes
and the initial value from userspace will be truncated.

Fix two things:
 * don't allow the driver to register anything longer than
   the 16 bytes that mac80211 reserves space for
 * require userspace to specify a starting value with the
   correct length (or none at all)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
net/mac80211/key.c diff | blob | history
net/mac80211/main.c diff | blob | history
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