Memory leak and NULL dereference fixes.

PR#3403
(cherry picked from commit d2aea03829)

Conflicts:

	apps/crl2p7.c
	crypto/asn1/a_utctm.c
	crypto/asn1/ameth_lib.c
	crypto/asn1/bio_asn1.c

apps/apps.c

@@ -362,6 +362,8 @@ int chopup_args(ARGS *arg, char *buf, int *argc, char **argv[])
 		{
 		arg->count=20;
 		arg->data=(char **)OPENSSL_malloc(sizeof(char *)*arg->count);
+		if (arg->data == NULL)
+			return 0;
 		}
 	for (i=0; i<arg->count; i++)
 		arg->data[i]=NULL;
@@ -1429,6 +1431,8 @@ char *make_config_name()
 
 	len=strlen(t)+strlen(OPENSSL_CONF)+2;
 	p=OPENSSL_malloc(len);
+	if (p == NULL)
+		return NULL;
 	BUF_strlcpy(p,t,len);
 #ifndef OPENSSL_SYS_VMS
 	BUF_strlcat(p,"/",len);

apps/ca.c

@@ -2751,6 +2751,9 @@ char *make_revocation_str(int rev_type, char *rev_arg)
 
 	revtm = X509_gmtime_adj(NULL, 0);
 
+	if (!revtm)
+		return NULL;
+
 	i = revtm->length + 1;
 
 	if (reason) i += strlen(reason) + 1;

apps/crl2p7.c

@@ -142,7 +142,13 @@ int MAIN(int argc, char **argv)
 			{
 			if (--argc < 1) goto bad;
 			if(!certflst) certflst = sk_new_null();
-			sk_push(certflst,*(++argv));
+			if (!certflst)
+				goto end;
+			if (!sk_push(certflst,*(++argv)))
+				{
+				sk_free(certflst);
+				goto end;
+				}
 			}
 		else
 			{