Merge tag 'ovl-fixes-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs

Pull overlayfs fixes from Miklos Szeredi:
 "Fix two bugs, a recent one introduced in the last cycle, and an older
  one from v5.11"

* tag 'ovl-fixes-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: fail on invalid uid/gid mapping at copy up
  ovl: fix tmpfile leak

Author: torvalds

fs/overlayfs/copy_up.c

@@ -792,7 +792,7 @@ static int ovl_copy_up_tmpfile(struct ovl_copy_up_ctx *c)
 	if (!c->metacopy && c->stat.size) {
 		err = ovl_copy_up_file(ofs, c->dentry, tmpfile, c->stat.size);
 		if (err)
-			return err;
+			goto out_fput;
 	}
 
 	err = ovl_copy_up_metadata(c, temp);
@@ -1011,6 +1011,10 @@ static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,
 	if (err)
 		return err;
 
+	if (!kuid_has_mapping(current_user_ns(), ctx.stat.uid) ||
+	    !kgid_has_mapping(current_user_ns(), ctx.stat.gid))
+		return -EOVERFLOW;
+
 	ctx.metacopy = ovl_need_meta_copy_up(dentry, ctx.stat.mode, flags);
 
 	if (parent) {