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-rw-r--r--crypto/bn/bn_div.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/bn/bn_div.c b/crypto/bn/bn_div.c
index c3772c243b..999bba756c 100644
--- a/crypto/bn/bn_div.c
+++ b/crypto/bn/bn_div.c
@@ -180,13 +180,13 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
BN_CTX_start(ctx);
tmp=BN_CTX_get(ctx);
- tmp->neg=0;
snum=BN_CTX_get(ctx);
sdiv=BN_CTX_get(ctx);
if (dv == NULL)
res=BN_CTX_get(ctx);
else res=dv;
- if (res == NULL) goto err;
+ if (sdiv == NULL || res == NULL) goto err;
+ tmp->neg=0;
/* First we normalise the numbers */
norm_shift=BN_BITS2-((BN_num_bits(divisor))%BN_BITS2);