| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.3 056/125] nl80211: Fix potential memory leak from parse_acl_data | Date | Mon, 7 Dec 2015 10:01:09 -0500 |
| |
4.3-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ola Olsson <ola1olsson@gmail.com>
commit 4baf6bea37247e59f1971e8009d13aeda95edba2 upstream.
If parse_acl_data succeeds but the subsequent parsing of smps attributes fails, there will be a memory leak due to early returns. Fix that by moving the ACL parsing later.
Fixes: 18998c381b19b ("cfg80211: allow requesting SMPS mode on ap start") Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- net/wireless/nl80211.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
--- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3409,12 +3409,6 @@ static int nl80211_start_ap(struct sk_bu wdev->iftype)) return -EINVAL; - if (info->attrs[NL80211_ATTR_ACL_POLICY]) { - params.acl = parse_acl_data(&rdev->wiphy, info); - if (IS_ERR(params.acl)) - return PTR_ERR(params.acl); - } - if (info->attrs[NL80211_ATTR_SMPS_MODE]) { params.smps_mode = nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); @@ -3438,6 +3432,12 @@ static int nl80211_start_ap(struct sk_bu params.smps_mode = NL80211_SMPS_OFF; } + if (info->attrs[NL80211_ATTR_ACL_POLICY]) { + params.acl = parse_acl_data(&rdev->wiphy, info); + if (IS_ERR(params.acl)) + return PTR_ERR(params.acl); + } + wdev_lock(wdev); err = rdev_start_ap(rdev, dev, ¶ms); if (!err) {
|