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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2012-08-08 19:44:21 +0400
committerJohn W. Linville <linville@tuxdriver.com>2012-08-10 14:50:25 -0400
commit60f53cf99060472973f16452116d9c467f8b08c6 (patch)
treebe40e99bdcfe442e9122a210418c1fa69162fb31
parentf41a9b3b15e0f74656f69e6da403d870c53ea4e6 (diff)
rndis_wlan: Fix potential memory leak in update_pmkid()
Do not leak memory by updating pointer with potentially NULL realloc return value. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Acked-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/rndis_wlan.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 241162e..7a4ae9e 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -1803,6 +1803,7 @@ static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
struct cfg80211_pmksa *pmksa,
int max_pmkids)
{
+ struct ndis_80211_pmkid *new_pmkids;
int i, err, newlen;
unsigned int count;
@@ -1833,11 +1834,12 @@ static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
/* add new pmkid */
newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
- pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
- if (!pmkids) {
+ new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
+ if (!new_pmkids) {
err = -ENOMEM;
goto error;
}
+ pmkids = new_pmkids;
pmkids->length = cpu_to_le32(newlen);
pmkids->bssid_info_count = cpu_to_le32(count + 1);