diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile
--- a/share/man/man9/Makefile
+++ b/share/man/man9/Makefile
@@ -1616,6 +1616,8 @@
 	mdchain.9 md_get_uio.9 \
 	mdchain.9 md_initm.9 \
 	mdchain.9 md_next_record.9
+MLINKS+=memcpy.9 memcpy_data.9
+MLINKS+=memmove.9 memmove_data.9
 MLINKS+=microtime.9 bintime.9 \
 	microtime.9 getbintime.9 \
 	microtime.9 getmicrotime.9 \
diff --git a/share/man/man9/bcopy.9 b/share/man/man9/bcopy.9
--- a/share/man/man9/bcopy.9
+++ b/share/man/man9/bcopy.9
@@ -28,7 +28,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd June 19, 2026
+.Dd July 1, 2026
 .Dt BCOPY 9
 .Os
 .Sh NAME
@@ -46,7 +46,9 @@
 bytes from object
 .Fa src
 to object
-.Fa dst .
+.Fa dst
+preserving the provenance of pointers in the copied object
+.Pq see Xr memory_model 7 for further information .
 The two objects may overlap.
 If
 .Fa len
diff --git a/share/man/man9/memcpy.9 b/share/man/man9/memcpy.9
--- a/share/man/man9/memcpy.9
+++ b/share/man/man9/memcpy.9
@@ -29,16 +29,19 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd June 19, 2026
+.Dd July 1, 2026
 .Dt MEMCPY 9
 .Os
 .Sh NAME
-.Nm memcpy
+.Nm memcpy ,
+.Nm memcpy_data
 .Nd copy bytes in memory
 .Sh SYNOPSIS
 .In sys/systm.h
 .Ft void *
 .Fn memcpy "void *dst" "const void *src" "size_t len"
+.Ft void *
+.Fn memcpy_data "void *dst" "const void *src" "size_t len"
 .Sh DESCRIPTION
 The
 .Fn memcpy
@@ -47,22 +50,31 @@
 bytes from object
 .Fa src
 to object
-.Fa dst .
+.Fa dst
+in a manner that preserves the provenance of pointers in the copied object
+.Pq see Xr memory_model 7 for further information .
 If
 .Fa src
 and
 .Fa dst
 overlap, the results are not defined.
+The
+.Fn memcpy_data
+function does the same except that it does not preserve the provenance
+of pointers in the copied object.
+On CHERI targets, the validity tag of any copied capability is
+explicitly cleared.
 .Sh RETURN VALUES
 The
 .Fn memcpy
-function
-returns the original value of
+and
+.Fn memcpy_data
+functions return the original value of
 .Fa dst .
-.Pp
 .Sh SEE ALSO
 .Xr bcopy 9 ,
-.Xr memmove 9
+.Xr memmove 9 ,
+.Xr memmove_data 9
 .Sh STANDARDS
 The
 .Fn memcpy
@@ -76,3 +88,7 @@
 .At V
 and was reimplemented for
 .Bx 4.3 Tahoe .
+The
+.Fn memcpy_data
+function first appeared in
+.Fx 16.0 .
diff --git a/share/man/man9/memmove.9 b/share/man/man9/memmove.9
--- a/share/man/man9/memmove.9
+++ b/share/man/man9/memmove.9
@@ -29,16 +29,19 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd June 19, 2026
+.Dd July 1, 2026
 .Dt MEMMOVE 9
 .Os
 .Sh NAME
-.Nm memmove
+.Nm memmove ,
+.Nm memmove_data
 .Nd copy bytes in memory
 .Sh SYNOPSIS
 .In sys/systm.h
 .Ft void *
 .Fn memmove "void *dst" "const void *src" "size_t len"
+.Ft void *
+.Fn memmove_data "void *dst" "const void *src" "size_t len"
 .Sh DESCRIPTION
 The
 .Fn memmove
@@ -49,18 +52,34 @@
 to object
 .Fa dst .
 The two objects may overlap;
-the copy is always done in a non-destructive manner.
+the copy is always done in a non-destructive manner and preserves
+the provenance of pointers in the copied object
+.Pq see Xr memory_model 7 for further information .
+The
+.Fn memmove_data
+function does the same except that it does not preserve the provenance
+of pointers in the copied object.
+On CHERI targets, the validity tag of any copied capability is
+explicitly cleared.
 .Sh RETURN VALUES
 The
 .Fn memmove
-function returns the original value of
+and
+.Fn memmove_data
+functions return the original value of
 .Fa dst .
 .Sh SEE ALSO
 .Xr bcopy 9 ,
-.Xr memcpy 9
+.Xr memcpy 9 ,
+.Xr memcpy_data 9
 .Sh STANDARDS
 The
 .Fn memmove
 function
 conforms to
 .St -isoC .
+.Sh HISTORY
+The
+.Fn memmove_data
+function first appeared in
+.Fx 16.0 .
diff --git a/sys/sys/systm.h b/sys/sys/systm.h
--- a/sys/sys/systm.h
+++ b/sys/sys/systm.h
@@ -256,6 +256,15 @@
 void	*memcpy(void * _Nonnull to, const void * _Nonnull from, size_t len);
 void	*memmove(void * _Nonnull dest, const void * _Nonnull src, size_t n);
 int	memcmp(const void *b1, const void *b2, size_t len);
+#ifdef __CHERI__
+void	*memcpy_data(void * _Nonnull to, const void * _Nonnull from,
+	    size_t len);
+void	*memmove_data(void * _Nonnull dest, const void * _Nonnull src,
+	    size_t n);
+#else
+#define	memcpy_data	memcpy
+#define	memmove_data	memmove
+#endif
 
 #ifdef SAN_NEEDS_INTERCEPTORS
 #define	SAN_INTERCEPTOR(func)	\