1 files changed, 10 insertions, 3 deletions

diff --git a/src/lib/libcrypto/bn/bn_div.c b/src/lib/libcrypto/bn/bn_div.c
index d6ddc9cbe3..802a43d642 100644
--- a/src/lib/libcrypto/bn/bn_div.c
+++ b/src/lib/libcrypto/bn/bn_div.c
@@ -229,7 +229,8 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
         if (dv == NULL)
                 res=BN_CTX_get(ctx);
         else    res=dv;
-        if (sdiv == NULL || res == NULL) goto err;
+        if (sdiv == NULL || res == NULL || tmp == NULL || snum == NULL)
+                goto err;
 
         /* First we normalise the numbers */
         norm_shift=BN_BITS2-((BN_num_bits(divisor))%BN_BITS2);
@@ -336,7 +337,7 @@ X) -> 0x%08X\n",
                                 t2 -= d1;
                                 }
 #else /* !BN_LLONG */
-                        BN_ULONG t2l,t2h,ql,qh;
+                        BN_ULONG t2l,t2h;
 
                         q=bn_div_words(n0,n1,d0);
 #ifdef BN_DEBUG_LEVITTE
@@ -354,9 +355,12 @@ X) -> 0x%08X\n",
                         t2l = d1 * q;
                         t2h = BN_UMULT_HIGH(d1,q);
 #else
+                        {
+                        BN_ULONG ql, qh;
                         t2l=LBITS(d1); t2h=HBITS(d1);
                         ql =LBITS(q);  qh =HBITS(q);
                         mul64(t2l,t2h,ql,qh); /* t2=(BN_ULLONG)d1*q; */
+                        }
 #endif
 
                         for (;;)
@@ -560,7 +564,7 @@ X) -> 0x%08X\n",
                                 t2 -= d1;
                                 }
 #else /* !BN_LLONG */
-                        BN_ULONG t2l,t2h,ql,qh;
+                        BN_ULONG t2l,t2h;
 
                         q=bn_div_words(n0,n1,d0);
 #ifdef BN_DEBUG_LEVITTE
@@ -578,9 +582,12 @@ X) -> 0x%08X\n",
                         t2l = d1 * q;
                         t2h = BN_UMULT_HIGH(d1,q);
 #else
+                        {
+                        BN_ULONG ql, qh;
                         t2l=LBITS(d1); t2h=HBITS(d1);
                         ql =LBITS(q);  qh =HBITS(q);
                         mul64(t2l,t2h,ql,qh); /* t2=(BN_ULLONG)d1*q; */
+                        }
 #endif
 
                         for (;;)