Fix use-after-free of skb when rx_handler returns RX_HANDLER_PASS.
Signed-off-by: Andreas Steinmetz <redacted>
--- a/drivers/net/macsec.c 2019-06-05 20:23:27.640154747 +0200
+++ b/drivers/net/macsec.c 2019-06-05 20:23:46.791565816 +0200
@@ -1103,10 +1103,9 @@ static rx_handler_result_t macsec_handle
}
skb = skb_unshare(skb, GFP_ATOMIC);
- if (!skb) {
- *pskb = NULL;
+ *pskb = skb;
+ if (!skb)
return RX_HANDLER_CONSUMED;
- }
pulled_sci = pskb_may_pull(skb, macsec_extra_len(true));
if (!pulled_sci) {