From 0ddcff49b672239dda94d70d0fcf50317a9f4b51 Mon Sep 17 00:00:00 2001 From: "weiyongjun (A)" <weiyongjun1@huawei.com> Date: Thu, 18 Jan 2018 02:23:34 +0000 Subject: [PATCH] mac80211_hwsim: fix possible memory leak in hwsim_new_radio_nl() '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 <weiyongjun1@huawei.com> Reviewed-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Srivatsa S. Bhat <srivatsa@csail.mit.edu> --- 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/mac80211_hwsim.c index 2681b533..95e9641 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -3084,8 +3084,10 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info) if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) { u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]); - if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) + if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) { + kfree(hwname); return -EINVAL; + } param.regd = hwsim_world_regdom_custom[idx]; } -- 2.7.4