This is a note to let you know that I've just added the patch titled cfg80211: Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: cfg80211-define-nla_policy-for-nl80211_attr_local_mesh_power_mode.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 8feb69c7bd89513be80eb19198d48f154b254021 Mon Sep 17 00:00:00 2001 From: Srinivas Dasari <dasaris@xxxxxxxxxxxxxxxx> Date: Fri, 7 Jul 2017 01:43:41 +0300 Subject: cfg80211: Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE From: Srinivas Dasari <dasaris@xxxxxxxxxxxxxxxx> commit 8feb69c7bd89513be80eb19198d48f154b254021 upstream. 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") Signed-off-by: Srinivas Dasari <dasaris@xxxxxxxxxxxxxxxx> Signed-off-by: Jouni Malinen <jouni@xxxxxxxxxxxxxxxx> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/wireless/nl80211.c | 1 + 1 file changed, 1 insertion(+) --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -362,6 +362,7 @@ static const struct nla_policy nl80211_p [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 }, Patches currently in stable-queue which might be from dasaris@xxxxxxxxxxxxxxxx are queue-4.9/cfg80211-validate-frequencies-nested-in-nl80211_attr_scan_frequencies.patch queue-4.9/cfg80211-check-if-pmkid-attribute-is-of-expected-size.patch queue-4.9/cfg80211-define-nla_policy-for-nl80211_attr_local_mesh_power_mode.patch queue-4.9/cfg80211-check-if-nan-service-id-is-of-expected-size.patch