Merge tag 'v3.10.108' into update

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / lib / digsig.c

diff --git a/lib/digsig.c b/lib/digsig.c
index 2f31e6a45f0af3f4e4bccd38aeb1d8324c72eeff..ae703dfc973155d928dcde49d1db0eaa8d664571 100644 (file)
--- a/lib/digsig.c
+++ b/lib/digsig.c
@@ -86,6 +86,12 @@ static int digsig_verify_rsa(struct key *key,
        down_read(&key->sem);
        ukp = key->payload.data;
 
+       if (!ukp) {
+               /* key was revoked before we acquired its semaphore */
+               err = -EKEYREVOKED;
+               goto err1;
+       }
+
        if (ukp->datalen < sizeof(*pkh))
                goto err1;