Index: VirtualBox-6.1.16/src/VBox/Additions/linux/sharedfolders/mount.vboxsf.c
===================================================================
--- VirtualBox-6.1.16.orig/src/VBox/Additions/linux/sharedfolders/mount.vboxsf.c
+++ VirtualBox-6.1.16/src/VBox/Additions/linux/sharedfolders/mount.vboxsf.c
@@ -456,6 +456,7 @@ main(int argc, char **argv)
     unsigned long flags = MS_NODEV;
     char *host_name;
     char *mount_point;
+    char options[120];
     struct vbsf_mount_info_new mntinf;
     struct vbsf_mount_opts opts =
     {
@@ -579,7 +580,8 @@ main(int argc, char **argv)
      *       options you also would have to adjust VBoxServiceAutoMount.cpp
      *       to keep this code here slick without having VbglR3.
      */
-    err = mount(host_name, mount_point, "vboxsf", flags, &mntinf);
+    sprintf(options, "uid=%d,gid=%d\n", mntinf.uid, mntinf.gid);
+    err = mount(host_name, mount_point, "vboxsf", flags, options);
     saved_errno = errno;
 
     /* Some versions of the mount utility (unknown which, if any) will turn the