Use memmove instead of memcpy for overlapping memory

CID 251047 251094

OK beck@ jsing@ millert@ tb@

diff --git a/lib/libcrypto/modes/cbc128.c b/lib/libcrypto/modes/cbc128.c
index fe45103..c5cf5a6 100644 (file)
--- a/lib/libcrypto/modes/cbc128.c
+++ b/lib/libcrypto/modes/cbc128.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: cbc128.c,v 1.4 2015/02/10 09:46:30 miod Exp $ */
+/* $OpenBSD: cbc128.c,v 1.5 2022/01/22 00:45:17 inoguchi Exp $ */
 /* ====================================================================
  * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
  *
@@ -110,7 +110,7 @@ void CRYPTO_cbc128_encrypt(const unsigned char *in, unsigned char *out,
                in  += 16;
                out += 16;
        }
-       memcpy(ivec,iv,16);
+       memmove(ivec,iv,16);
 }
 
 void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out,
@@ -148,7 +148,7 @@ void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out,
                                out += 16;
                        }
                }
-               memcpy(ivec,iv,16);
+               memmove(ivec,iv,16);
        } else {
                if (STRICT_ALIGNMENT &&
                    ((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) {