]> git.kernelconcepts.de Git - karo-tx-linux.git/commit
cfg80211: Fix validation of AKM suites
authorJouni Malinen <jouni@qca.qualcomm.com>
Wed, 21 Sep 2011 13:13:07 +0000 (16:13 +0300)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 7 Nov 2011 21:47:05 +0000 (13:47 -0800)
commit29dacf8da41a41d3e439cce7f939adeb8bb4ab76
tree5cc336fae1ea7e3c8726c3005570f7714fd98b25
parent8608c3131f166b628f6ccd49d508b682adc95827
cfg80211: Fix validation of AKM suites

commit 1b9ca0272ffae212e726380f66777b30a56ed7a5 upstream.

Incorrect variable was used in validating the akm_suites array from
NL80211_ATTR_AKM_SUITES. In addition, there was no explicit
validation of the array length (we only have room for
NL80211_MAX_NR_AKM_SUITES).

This can result in a buffer write overflow for stack variables with
arbitrary data from user space. The nl80211 commands using the affected
functionality require GENL_ADMIN_PERM, so this is only exposed to admin
users.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
net/wireless/nl80211.c