1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/libcrypto/rsa/rsa_eay.c b/src/lib/libcrypto/rsa/rsa_eay.c
index c5eaeeae6b..7c941885f0 100644
--- a/src/lib/libcrypto/rsa/rsa_eay.c
+++ b/src/lib/libcrypto/rsa/rsa_eay.c
@@ -675,7 +675,7 @@ static int RSA_eay_public_decrypt(int flen, const unsigned char *from,
                 rsa->_method_mod_n)) goto err;
 
         if ((padding == RSA_X931_PADDING) && ((ret->d[0] & 0xf) != 12))
-                BN_sub(ret, rsa->n, ret);
+                if (!BN_sub(ret, rsa->n, ret)) goto err;
 
         p=buf;
         i=BN_bn2bin(ret,p);