diff options
| author | Ben Hutchings <ben.hutchings@codethink.co.uk> | 2017-11-10 18:48:50 +0000 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2017-11-20 16:57:15 +0100 |
| commit | 67bd52386125ce1159c0581cbcd2740addf33cd4 (patch) | |
| tree | 5be55da42a111f6546deb88f82030a8afdf3fbaa /drivers | |
| parent | d7be102f2945a626f55e0501e52bb31ba3e77b81 (diff) | |
| download | linux-67bd52386125ce1159c0581cbcd2740addf33cd4.tar.gz | |
mac80211_hwsim: Fix memory leak in hwsim_new_radio_nl()
hwsim_new_radio_nl() now copies the name attribute in order to add a
null-terminator. mac80211_hwsim_new_radio() (indirectly) copies it
again into the net_device structure, so the first copy is not used or
freed later. Free the first copy before returning.
Fixes: ff4dd73dd2b4 ("mac80211_hwsim: check HWSIM_ATTR_RADIO_NAME length")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/mac80211_hwsim.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 7c3600643c7f..10b075a46b26 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -3108,6 +3108,7 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info) { struct hwsim_new_radio_params param = { 0 }; const char *hwname = NULL; + int ret; param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG]; param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE]; @@ -3147,7 +3148,9 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info) param.regd = hwsim_world_regdom_custom[idx]; } - return mac80211_hwsim_new_radio(info, ¶m); + ret = mac80211_hwsim_new_radio(info, ¶m); + kfree(hwname); + return ret; } static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info) |