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(parent: 6440f0e) | patch
mac80211: use constant time comparison with keys
authorJason A. Donenfeld <Jason@zx2c4.com>
Tue, 17 Oct 2017 18:32:07 +0000 (20:32 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 18 Nov 2017 10:11:05 +0000 (11:11 +0100)
commitcdac2028c90112354febf9fd6d50ae70259cae0b
treeafb84e45c562d500f5b4a5df5ed993eb9f9c7648tree | snapshot
parent6440f0ee8a1779f53526bccb9de00914daeb9094commit | diff
mac80211: use constant time comparison with keys

commit 2bdd713b92a9cade239d3c7d15205a09f556624d upstream.

Otherwise we risk leaking information via timing side channel.

Fixes: fdf7cb4185b6 ("mac80211: accept key reinstall without changing anything")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/mac80211/key.c diff | blob | history
Linux kernels and configurations used by Zygo.