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mac80211_hwsim: fix possible memory leak in hwsim_new_radio_nl()

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[ Upstream commit 0ddcff49b6 ]

'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: ff4dd73dd2 ("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: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
weiyongjun (A)
2018-01-18 02:23:34 +00:00
committed by Greg Kroah-Hartman
parent f52bf07175
commit 7e6d77dfca
1 changed files with 3 additions and 1 deletions
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4
drivers/net/wireless/mac80211_hwsim.c
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@@ -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];
}