From: Kelvin Lee <kiyolee@gmail.com>
Date: Fri, 30 Sep 2022 08:26:37 +0000 (+1000)
Subject: Avoid divide by 0 exception
X-Git-Tag: openssl-3.2.0-alpha1~1982
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3189e12733e676fbbc30b1b2d98952a6a9f78073;p=thirdparty%2Fopenssl.git

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)
---

diff --git a/include/internal/safe_math.h b/include/internal/safe_math.h
index 9a20957eb65..be37e6ab882 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;                                                        \
     }