From 4fea7005c3d08ed0d575bdea5082b7b0ce355237 Mon Sep 17 00:00:00 2001
From: Mansour Ahmadi <m.ahmadi@northeastern.edu>
Date: Tue, 11 Dec 2018 17:26:50 -0500
Subject: fix inconsistent flen check in rsa_pk1 and rsa_oaep

Fixes #7117

Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7880)
---
 crypto/rsa/rsa_pk1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'crypto/rsa/rsa_pk1.c')

diff --git a/crypto/rsa/rsa_pk1.c b/crypto/rsa/rsa_pk1.c
index 13f1d827be..cb7518e1d2 100644
--- a/crypto/rsa/rsa_pk1.c
+++ b/crypto/rsa/rsa_pk1.c
@@ -161,7 +161,7 @@ int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
     unsigned int good, found_zero_byte, mask;
     int zero_index = 0, msg_index, mlen = -1;
 
-    if (tlen < 0 || flen < 0)
+    if (tlen <= 0 || flen <= 0)
         return -1;
 
     /*
-- 
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