diff --git a/common/bitutil/or_amd64.s b/common/bitutil/or_amd64.s
index 9c7cd12abb..d2d3b54fcf 100644
--- a/common/bitutil/or_amd64.s
+++ b/common/bitutil/or_amd64.s
@@ -1,4 +1,4 @@
-// Copyright 2018 The Go Authors. All rights reserved.
+// Copyright 2025 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 // inspired by: https://github.com/golang/go/blob/4a3cef2036097d323b6cc0bbe90fc4d8c7588660/src/crypto/internal/fips140/subtle/xor_amd64.s
diff --git a/common/bitutil/or_arm64.s b/common/bitutil/or_arm64.s
index e6b49a48cc..15af58d314 100644
--- a/common/bitutil/or_arm64.s
+++ b/common/bitutil/or_arm64.s
@@ -1,4 +1,4 @@
-// Copyright 2020 The Go Authors. All rights reserved.
+// Copyright 2025 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 // inspired by: https://github.com/golang/go/blob/4a3cef2036097d323b6cc0bbe90fc4d8c7588660/src/crypto/internal/fips140/subtle/xor_arm64.s
diff --git a/common/bitutil/or_asm.go b/common/bitutil/or_asm.go
index 6c6331e0e4..037ae0fb9c 100644
--- a/common/bitutil/or_asm.go
+++ b/common/bitutil/or_asm.go
@@ -1,4 +1,4 @@
-// Copyright 2018 The Go Authors. All rights reserved.
+// Copyright 2025 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 // inspired by: https://github.com/golang/go/blob/4a3cef2036097d323b6cc0bbe90fc4d8c7588660/src/crypto/internal/fips140/subtle/xor_asm.go
@@ -8,7 +8,8 @@
 package bitutil
 
 func orBytes(dst, a, b []byte) int {
-	orBytesASM(&dst[0], &a[0], &b[0], len(a))
+	n := min(len(a), len(b))
+	orBytesASM(&dst[0], &a[0], &b[0], n)
 	return len(a)
 }
 
diff --git a/common/bitutil/or_generic.go b/common/bitutil/or_generic.go
index 96f73a0273..e274b5b246 100644
--- a/common/bitutil/or_generic.go
+++ b/common/bitutil/or_generic.go
@@ -1,4 +1,4 @@
-// Copyright 2013 The Go Authors. All rights reserved.
+// Copyright 2025 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.