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| author | Johannes Berg <johannes.berg@intel.com> | 2011-11-03 09:27:01 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-11-07 13:19:13 -0500 |
| commit | 6c7394197af90f6a332180e33f5d025d3037d883 (patch) | |
| tree | 9fcebadff9c028206a9c51fe99764662e4acacbf /net/wireless | |
| parent | 3432f9233704a66e6067944339a311744243707d (diff) | |
| download | linux-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/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 3 |
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, |