X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=security%2Fkeys%2Fdh.c;h=531ed2ec132f4f0ab97143b86b3bb55d7eb527c8;hb=59f23b6e428bf0a17d55f96df32e71652b597131;hp=880505a4b9f1e273429783aa5ebe1eee2579674c;hpb=9ba55cf7cfbfd12a7e914d0d55b7581e896b3f0d;p=cascardo%2Flinux.git

diff --git a/security/keys/dh.c b/security/keys/dh.c
index 880505a4b9f1..531ed2ec132f 100644
--- a/security/keys/dh.c
+++ b/security/keys/dh.c
@@ -78,7 +78,8 @@ error:
 }
 
 long keyctl_dh_compute(struct keyctl_dh_params __user *params,
-		       char __user *buffer, size_t buflen)
+		       char __user *buffer, size_t buflen,
+		       void __user *reserved)
 {
 	long ret;
 	MPI base, private, prime, result;
@@ -97,6 +98,11 @@ long keyctl_dh_compute(struct keyctl_dh_params __user *params,
 		goto out;
 	}
 
+	if (reserved) {
+		ret = -EINVAL;
+		goto out;
+	}
+
 	keylen = mpi_from_key(pcopy.prime, buflen, &prime);
 	if (keylen < 0 || !prime) {
 		/* buflen == 0 may be used to query the required buffer size,