Fix blake2 final coverity issue

embhorn · embhorn · commit 9c2ea1256370 · 2025-07-14T15:04:15.000-05:00
diff --git a/wolfcrypt/src/blake2b.c b/wolfcrypt/src/blake2b.c
@@ -358,7 +358,7 @@ int blake2b_final( blake2b_state *S, byte *out, byte outlen )
     S->buflen -= BLAKE2B_BLOCKBYTES;
     if ( S->buflen > BLAKE2B_BLOCKBYTES )
       return BAD_LENGTH_E;
-    XMEMCPY( S->buf, S->buf + BLAKE2B_BLOCKBYTES, (wolfssl_word)S->buflen );
+    XMEMMOVE( S->buf, S->buf + BLAKE2B_BLOCKBYTES, (wolfssl_word)S->buflen );
   }
 
   blake2b_increment_counter( S, S->buflen );

Original file line number	Diff line number	Diff line change
`@@ -358,7 +358,7 @@ int blake2b_final( blake2b_state S, byte out, byte outlen )`
`358`	`358`	`S->buflen -= BLAKE2B_BLOCKBYTES;`
`359`	`359`	`if ( S->buflen > BLAKE2B_BLOCKBYTES )`
`360`	`360`	`return BAD_LENGTH_E;`
`361`		`- XMEMCPY( S->buf, S->buf + BLAKE2B_BLOCKBYTES, (wolfssl_word)S->buflen );`
	`361`	`+ XMEMMOVE( S->buf, S->buf + BLAKE2B_BLOCKBYTES, (wolfssl_word)S->buflen );`
`362`	`362`	`}`
`363`	`363`
`364`	`364`	`blake2b_increment_counter( S, S->buflen );`