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authorJohannes Berg <johannes.berg@intel.com>2011-11-03 09:27:01 +0100
committerJohn W. Linville <linville@tuxdriver.com>2011-11-07 13:19:13 -0500
commit6c7394197af90f6a332180e33f5d025d3037d883 (patch)
tree9fcebadff9c028206a9c51fe99764662e4acacbf /net
parent3432f9233704a66e6067944339a311744243707d (diff)
downloadlinux-6c7394197af90f6a332180e33f5d025d3037d883.tar.bz2
nl80211: fix HT capability attribute validation
Since the NL80211_ATTR_HT_CAPABILITY attribute is used as a struct, it needs a minimum, not maximum length. Enforce that properly. Not doing so could potentially lead to reading after the buffer. Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/wireless/nl80211.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 48260c2d092a..b587857a9d7d 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -132,8 +132,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
- [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
- .len = NL80211_HT_CAPABILITY_LEN },
+ [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
[NL80211_ATTR_IE] = { .type = NLA_BINARY,