linux-kernel - [03/28] UBIFS: restrict world-writable debugfs files

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Date:	Tue, 19 Apr 2011 13:30:41 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Vasiliy Kulikov <segoon@...nwall.com>,
	Artem Bityutskiy <Artem.Bityutskiy@...ia.com>
Subject: [03/28] UBIFS: restrict world-writable debugfs files

2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Vasiliy Kulikov <segoon@...nwall.com>

commit 8c559d30b4e59cf6994215ada1fe744928f494bf upstream.

Don't allow everybody to dump sensitive information about filesystems.

Signed-off-by: Vasiliy Kulikov <segoon@...nwall.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@...ia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 fs/ubifs/debug.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2691,19 +2691,19 @@ int dbg_debugfs_init_fs(struct ubifs_inf
 	}
 
 	fname = "dump_lprops";
-	dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
+	dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
 	if (IS_ERR(dent))
 		goto out_remove;
 	d->dfs_dump_lprops = dent;
 
 	fname = "dump_budg";
-	dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
+	dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
 	if (IS_ERR(dent))
 		goto out_remove;
 	d->dfs_dump_budg = dent;
 
 	fname = "dump_tnc";
-	dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
+	dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
 	if (IS_ERR(dent))
 		goto out_remove;
 	d->dfs_dump_tnc = dent;


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