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Date: Thu, 5 Mar 2020 12:13:41 -0500 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Johannes Berg <johannes.berg@...el.com>, Sasha Levin <sashal@...nel.org>, linux-wireless@...r.kernel.org, netdev@...r.kernel.org Subject: [PATCH AUTOSEL 5.4 20/58] nl80211: fix potential leak in AP start From: Johannes Berg <johannes.berg@...el.com> [ Upstream commit 9951ebfcdf2b97dbb28a5d930458424341e61aa2 ] If nl80211_parse_he_obss_pd() fails, we leak the previously allocated ACL memory. Free it in this case. Fixes: 796e90f42b7e ("cfg80211: add support for parsing OBBS_PD attributes") Signed-off-by: Johannes Berg <johannes.berg@...el.com> Link: https://lore.kernel.org/r/20200221104142.835aba4cdd14.I1923b55ba9989c57e13978f91f40bfdc45e60cbd@changeid Signed-off-by: Johannes Berg <johannes.berg@...el.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- net/wireless/nl80211.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index c74646b7a751f..78c2d9359fc72 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4794,8 +4794,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) err = nl80211_parse_he_obss_pd( info->attrs[NL80211_ATTR_HE_OBSS_PD], ¶ms.he_obss_pd); - if (err) - return err; + goto out; } nl80211_calculate_ap_params(¶ms); @@ -4817,6 +4816,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) } wdev_unlock(wdev); +out: kfree(params.acl); return err; -- 2.20.1
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