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| author | Eliad Peller <eliad@wizery.com> | 2011-11-24 18:13:56 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-11-28 13:46:40 -0500 |
| commit | e007b857e88097c96c45620bf3b04a4e309053d1 (patch) | |
| tree | 3ebc3353b33539c33e50335c9391f8727e826614 /net/wireless | |
| parent | 82e5fc2a34fa9ffea38f00c4066b7e600a0ca5e6 (diff) | |
| download | linux-e007b857e88097c96c45620bf3b04a4e309053d1.tar.gz linux-e007b857e88097c96c45620bf3b04a4e309053d1.tar.bz2 linux-e007b857e88097c96c45620bf3b04a4e309053d1.zip | |
nl80211: fix MAC address validation
MAC addresses have a fixed length. The current
policy allows passing < ETH_ALEN bytes, which
might result in reading beyond the buffer.
Cc: stable@vger.kernel.org
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index b3a476fe8272..ffafda5022c2 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -89,8 +89,8 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, - [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, - [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN }, + [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, + [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, |