linux-kernel - [PATCH 4.18 019/168] nl80211: Fix nla_put_u8 to u16 for NL80211_WMMR

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Date:   Mon,  8 Oct 2018 20:29:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Haim Dreyfuss <haim.dreyfuss@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Johannes Berg <johannes.berg@...el.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.18 019/168] nl80211: Fix nla_put_u8 to u16 for NL80211_WMMR_TXOP

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Haim Dreyfuss <haim.dreyfuss@...el.com>

[ Upstream commit d3c89bbc7491d5e288ca2993e999d24ba9ff52ad ]

TXOP (also known as Channel Occupancy Time) is u16 and should be
added using nla_put_u16 instead of u8, fix that.

Fixes: 50f32718e125 ("nl80211: Add wmm rule attribute to NL80211_CMD_GET_WIPHY dump command")
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@...el.com>
Signed-off-by: Luca Coelho <luciano.coelho@...el.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/wireless/nl80211.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -672,8 +672,8 @@ static int nl80211_msg_put_wmm_rules(str
 				rule->wmm_rule.client[j].cw_max) ||
 		    nla_put_u8(msg, NL80211_WMMR_AIFSN,
 			       rule->wmm_rule.client[j].aifsn) ||
-		    nla_put_u8(msg, NL80211_WMMR_TXOP,
-			       rule->wmm_rule.client[j].cot))
+		    nla_put_u16(msg, NL80211_WMMR_TXOP,
+			        rule->wmm_rule.client[j].cot))
 			goto nla_put_failure;
 
 		nla_nest_end(msg, nl_wmm_rule);