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authorSrinivas Dasari <dasaris@qti.qualcomm.com>2017-07-07 01:43:41 +0300
committerSasha Levin <alexander.levin@verizon.com>2017-07-31 13:37:54 -0400
commite61d75e0d800c7f4469d391e3598b890be11d95c (patch)
tree7cc6dd761275de3ceaf95bfbd395e217854506fb /net
parente080a193465629231466067e4b5d945deaac29d5 (diff)
cfg80211: Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE
[ Upstream commit 8feb69c7bd89513be80eb19198d48f154b254021 ] Buffer overread may happen as nl80211_set_station() reads 4 bytes from the attribute NL80211_ATTR_LOCAL_MESH_POWER_MODE without validating the size of data received when userspace sends less than 4 bytes of data with NL80211_ATTR_LOCAL_MESH_POWER_MODE. Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE to avoid the buffer overread. Fixes: 3b1c5a5307f ("{cfg,nl}80211: mesh power mode primitives and userspace access") Cc: stable@vger.kernel.org Signed-off-by: Srinivas Dasari <dasaris@qti.qualcomm.com> Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'net')
-rw-r--r--net/wireless/nl80211.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 81203bbb2eef..3e8f873cca38 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -358,6 +358,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
[NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
[NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
+ [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
[NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
[NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
[NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },