From: Eliad Peller Date: Thu, 24 Nov 2011 16:13:56 +0000 (+0200) Subject: nl80211: fix MAC address validation X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e007b857e88097c96c45620bf3b04a4e309053d1;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Signed-off-by: John W. Linville --- 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,