From 3189e12733e676fbbc30b1b2d98952a6a9f78073 Mon Sep 17 00:00:00 2001
From: Kelvin Lee <kiyolee@gmail.com>
Date: Fri, 30 Sep 2022 18:26:37 +1000
Subject: [PATCH] Avoid divide by 0 exception

CLA: trivial

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19310)
---
 include/internal/safe_math.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/internal/safe_math.h b/include/internal/safe_math.h
index 9a20957eb6..be37e6ab88 100644
--- a/include/internal/safe_math.h
+++ b/include/internal/safe_math.h
@@ -183,7 +183,7 @@
                                                                type b,       \
                                                                int *err)     \
     {                                                                        \
-        if (a > max / b)                                                     \
+        if (b != 0 && a > max / b)                                           \
             *err |= 1;                                                       \
         return a * b;                                                        \
     }