1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libcrypto/bn/bn_gf2m.c b/src/lib/libcrypto/bn/bn_gf2m.c
index 306f029f27..ae642ccb39 100644
--- a/src/lib/libcrypto/bn/bn_gf2m.c
+++ b/src/lib/libcrypto/bn/bn_gf2m.c
@@ -294,7 +294,8 @@ int	BN_GF2m_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b)
         if (a->top < b->top) { at = b; bt = a; }
         else { at = a; bt = b; }
 
-        bn_wexpand(r, at->top);
+        if(bn_wexpand(r, at->top) == NULL)
+                return 0;
 
         for (i = 0; i < bt->top; i++)
                 {