X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=lib%2Fdigsig.c;h=6ba6fcd92dd10cd2c78898b35c65a0540b19bfb3;hb=27ab2a240a797b073ce63385b1d5db06e44fc3ae;hp=03d7c63837aecb36f74037212e9e7dd421e2e4c9;hpb=9c35baf6cee9a5745d55de6f9995916dde642517;p=mirror_ubuntu-artful-kernel.git

diff --git a/lib/digsig.c b/lib/digsig.c
index 03d7c63837ae..6ba6fcd92dd1 100644
--- 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_locked(key);
 
+	if (!ukp) {
+		/* key was revoked before we acquired its semaphore */
+		err = -EKEYREVOKED;
+		goto err1;
+	}
+
 	if (ukp->datalen < sizeof(*pkh))
 		goto err1;