Use memmove instead of memcpy for overlapping memory

CID 250936 251103

OK beck@ jsing@ millert@ tb@

diff --git a/lib/libcrypto/aes/aes_ige.c b/lib/libcrypto/aes/aes_ige.c
index 16ef561..244a5a3 100644 (file)
--- a/lib/libcrypto/aes/aes_ige.c
+++ b/lib/libcrypto/aes/aes_ige.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: aes_ige.c,v 1.7 2015/02/10 09:46:30 miod Exp $ */
+/* $OpenBSD: aes_ige.c,v 1.8 2022/01/22 00:43:41 inoguchi Exp $ */
 /* ====================================================================
  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
  *
@@ -109,8 +109,8 @@ AES_ige_encrypt(const unsigned char *in, unsigned char *out, size_t length,
                                in += AES_BLOCK_SIZE;
                                out += AES_BLOCK_SIZE;
                        }
-                       memcpy(ivec, ivp->data, AES_BLOCK_SIZE);
-                       memcpy(ivec + AES_BLOCK_SIZE, iv2p->data, AES_BLOCK_SIZE);
+                       memmove(ivec, ivp->data, AES_BLOCK_SIZE);
+                       memmove(ivec + AES_BLOCK_SIZE, iv2p->data, AES_BLOCK_SIZE);
                } else {
                        aes_block_t tmp, tmp2;
                        aes_block_t iv;
@@ -161,8 +161,8 @@ AES_ige_encrypt(const unsigned char *in, unsigned char *out, size_t length,
                                in += AES_BLOCK_SIZE;
                                out += AES_BLOCK_SIZE;
                        }
-                       memcpy(ivec, ivp->data, AES_BLOCK_SIZE);
-                       memcpy(ivec + AES_BLOCK_SIZE, iv2p->data, AES_BLOCK_SIZE);
+                       memmove(ivec, ivp->data, AES_BLOCK_SIZE);
+                       memmove(ivec + AES_BLOCK_SIZE, iv2p->data, AES_BLOCK_SIZE);
                } else {
                        aes_block_t tmp, tmp2;
                        aes_block_t iv;