X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/038ec85e825fc940c1387f64a88ae73b75f6822b..8d90b8b27bf086da6245030459ab3e5977313eb0:/sshdss.c

diff --git a/sshdss.c b/sshdss.c
index 532c13f2..6487d75a 100644
--- a/sshdss.c
+++ b/sshdss.c
@@ -72,6 +72,9 @@ static Bignum get160(char **data, int *datalen)
 {
     Bignum b;
 
+    if (*datalen < 20)
+        return NULL;
+
     b = bignum_from_bytes((unsigned char *)*data, 20);
     *data += 20;
     *datalen -= 20;
@@ -430,11 +433,11 @@ static void *dss_openssh_createkey(unsigned char **blob, int *len)
     dss->x = getmp(b, len);
 
     if (!dss->p || !dss->q || !dss->g || !dss->y || !dss->x) {
-	sfree(dss->p);
-	sfree(dss->q);
-	sfree(dss->g);
-	sfree(dss->y);
-	sfree(dss->x);
+	freebn(dss->p);
+	freebn(dss->q);
+	freebn(dss->g);
+	freebn(dss->y);
+	freebn(dss->x);
 	sfree(dss);
 	return NULL;
     }