diff --git a/hw/9pfs/virtio-9p-posix-acl.c b/hw/9pfs/virtio-9p-posix-acl.c
index a1948e3affc1571e9e33ba7531e3605acd1c7288..c064017b1fb50303f7865557e094a7b82fd359af 100644
--- a/hw/9pfs/virtio-9p-posix-acl.c
+++ b/hw/9pfs/virtio-9p-posix-acl.c
@@ -44,7 +44,8 @@ static ssize_t mp_pacl_listxattr(FsContext *ctx, const char *path,
         return -1;
     }
 
-    strncpy(value, ACL_ACCESS, len);
+    /* len includes the trailing NUL */
+    memcpy(value, ACL_ACCESS, len);
     return 0;
 }
 
@@ -95,7 +96,8 @@ static ssize_t mp_dacl_listxattr(FsContext *ctx, const char *path,
         return -1;
     }
 
-    strncpy(value, ACL_DEFAULT, len);
+    /* len includes the trailing NUL */
+    memcpy(value, ACL_ACCESS, len);
     return 0;
 }
 
diff --git a/hw/9pfs/virtio-9p-xattr-user.c b/hw/9pfs/virtio-9p-xattr-user.c
index 5044a3e5ab4b5d2df38247e437757ae9065848d0..5bb602007096baad89316a10282f01de2233baf3 100644
--- a/hw/9pfs/virtio-9p-xattr-user.c
+++ b/hw/9pfs/virtio-9p-xattr-user.c
@@ -61,7 +61,8 @@ static ssize_t mp_user_listxattr(FsContext *ctx, const char *path,
         return -1;
     }
 
-    strncpy(value, name, name_size);
+    /* name_size includes the trailing NUL. */
+    memcpy(value, name, name_size);
     return name_size;
 }
 
diff --git a/hw/9pfs/virtio-9p-xattr.c b/hw/9pfs/virtio-9p-xattr.c
index 7f08f6e1763d11bef4dc7ca7aa365331b0f4ad94..a83960676d16c74cbfd919ddeaca766dcb337494 100644
--- a/hw/9pfs/virtio-9p-xattr.c
+++ b/hw/9pfs/virtio-9p-xattr.c
@@ -53,7 +53,8 @@ ssize_t pt_listxattr(FsContext *ctx, const char *path,
         return -1;
     }
 
-    strncpy(value, name, name_size);
+    /* no need for strncpy: name_size is strlen(name)+1 */
+    memcpy(value, name, name_size);
     return name_size;
 }