Commit 2fac86d9 authored by Andy Polyakov's avatar Andy Polyakov Committed by Matt Caswell
Browse files

bn/asm/x86_64-mont.pl: fix for CVE-2016-7055 (Low severity). 



Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
parent dca2e0ee

crypto/bn/asm/x86_64-mont.pl

+2 −3
Original line number Diff line number Diff line
@@ -1157,18 +1157,17 @@ $code.=<<___; 
	mulx	2*8($aptr),%r15,%r13	# ...

	adox	-3*8($tptr),%r11

	adcx	%r15,%r12

	adox	$zero,%r12

	adox	-2*8($tptr),%r12

	adcx	$zero,%r13

	adox	$zero,%r13



	mov	$bptr,8(%rsp)		# off-load &b[i]

	.byte	0x67

	mov	$mi,%r15

	imulq	24(%rsp),$mi		# "t[0]"*n0

	xor	%ebp,%ebp		# xor	$zero,$zero	# cf=0, of=0



	mulx	3*8($aptr),%rax,%r14

	 mov	$mi,%rdx

	adox	-2*8($tptr),%r12

	adcx	%rax,%r13

	adox	-1*8($tptr),%r13

	adcx	$zero,%r14