net: Fix skb->csum update in inet_proto_csum_replace16().

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / lib / digsig.c

diff --git a/lib/digsig.c b/lib/digsig.c
index 07be6c1..00c5c81 100644 (file)
--- a/lib/digsig.c
+++ b/lib/digsig.c
@@ -87,6 +87,12 @@ static int digsig_verify_rsa(struct key *key,
        down_read(&key->sem);
        ukp = user_key_payload(key);
 
+       if (!ukp) {
+               /* key was revoked before we acquired its semaphore */
+               err = -EKEYREVOKED;
+               goto err1;
+       }
+
        if (ukp->datalen < sizeof(*pkh))
                goto err1;