lib/digsig: digsig_verify_rsa(): return -EINVAL if modulo length is zero

[deliverable/linux.git] / lib / digsig.c

diff --git a/lib/digsig.c b/lib/digsig.c
index a121cbc5a46bb4e2f6d38a1662fd1ba2dbed6170..55b8b2f41a9e0a53acee9afb1353d70b6b899a8c 100644 (file)
--- a/lib/digsig.c
+++ b/lib/digsig.c
@@ -114,13 +114,15 @@ static int digsig_verify_rsa(struct key *key,
                datap += remaining;
        }
 
-       err = -ENOMEM;
-
        mblen = mpi_get_nbits(pkey[0]);
        mlen = DIV_ROUND_UP(mblen, 8);
 
-       if (mlen == 0)
+       if (mlen == 0) {
+               err = -EINVAL;
                goto err;
+       }
+
+       err = -ENOMEM;
 
        out1 = kzalloc(mlen, GFP_KERNEL);
        if (!out1)