X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fbn%2Fbn_lib.c;h=43c336f526091718796d81e16b69843e3fff79de;hp=1f45b09d080b6c86593c5fe304a57d42ccccfc0c;hb=1a0173304755bd44662a201734f80eca3afe8a9c;hpb=d2cd46127c746191b5fdcec6b04719feac4735c0

diff --git a/crypto/bn/bn_lib.c b/crypto/bn/bn_lib.c
index 1f45b09d08..43c336f526 100644
--- a/crypto/bn/bn_lib.c
+++ b/crypto/bn/bn_lib.c
@@ -782,6 +782,9 @@ int BN_set_bit(BIGNUM *a, int n)
 	{
 	int i,j,k;
 
+	if (n < 0)
+		return 0;
+
 	i=n/BN_BITS2;
 	j=n%BN_BITS2;
 	if (a->top <= i)
@@ -801,6 +804,9 @@ int BN_clear_bit(BIGNUM *a, int n)
 	{
 	int i,j;
 
+	if (n < 0)
+		return 0;
+
 	i=n/BN_BITS2;
 	j=n%BN_BITS2;
 	if (a->top <= i) return(0);
@@ -825,6 +831,9 @@ int BN_mask_bits(BIGNUM *a, int n)
 	{
 	int b,w;
 
+	if (n < 0)
+		return 0;
+
 	w=n/BN_BITS2;
 	b=n%BN_BITS2;
 	if (w >= a->top) return(0);