From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: "weiyongjun (A)" , Johannes Berg , Sasha Levin Subject: [PATCH AUTOSEL for 4.15 059/189] mac80211_hwsim: fix possible memory leak in hwsim_new_radio_nl() Date: Mon, 9 Apr 2018 00:17:32 +0000 Message-ID: <20180409001637.162453-59-alexander.levin@microsoft.com> References: <20180409001637.162453-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001637.162453-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: From: "weiyongjun (A)" [ Upstream commit 0ddcff49b672239dda94d70d0fcf50317a9f4b51 ] 'hwname' is malloced in hwsim_new_radio_nl() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fixes: ff4dd73dd2b4 ("mac80211_hwsim: check HWSIM_ATTR_RADIO_NAME length") Signed-off-by: Wei Yongjun Reviewed-by: Ben Hutchings Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/mac80211_hwsim.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/m= ac80211_hwsim.c index 731d59ee6efe..479250bca605 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -3155,8 +3155,10 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, s= truct genl_info *info) if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) { u32 idx =3D nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]); =20 - if (idx >=3D ARRAY_SIZE(hwsim_world_regdom_custom)) + if (idx >=3D ARRAY_SIZE(hwsim_world_regdom_custom)) { + kfree(hwname); return -EINVAL; + } param.regd =3D hwsim_world_regdom_custom[idx]; } =20 --=20 2.15.1