linux-kernel - [013/145] netlabel: fix export of SELinux categories

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Date:	Fri, 12 Mar 2010 16:25:46 -0800
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,
	Joshua Roys <joshua.roys@...i.gatech.edu>,
	Paul Moore <paul.moore@...com>,
	James Morris <jmorris@...ei.org>
Subject: [013/145] netlabel: fix export of SELinux categories > 127

2.6.32-stable review patch.  If anyone has any objections, please let me know.

----------------
From: Joshua Roys <joshua.roys@...i.gatech.edu>

commit c36f74e67fa12202dbcb4ad92c5ac844f9d36b98 upstream.

This fixes corrupted CIPSO packets when SELinux categories greater than 127
are used.  The bug occured on the second (and later) loops through the
while; the inner for loop through the ebitmap->maps array used the same
index as the NetLabel catmap->bitmap array, even though the NetLabel bitmap
is twice as long as the SELinux bitmap.

Signed-off-by: Joshua Roys <joshua.roys@...i.gatech.edu>
Acked-by: Paul Moore <paul.moore@...com>
Signed-off-by: James Morris <jmorris@...ei.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 security/selinux/ss/ebitmap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/security/selinux/ss/ebitmap.c
+++ b/security/selinux/ss/ebitmap.c
@@ -128,7 +128,7 @@ int ebitmap_netlbl_export(struct ebitmap
 			cmap_idx = delta / NETLBL_CATMAP_MAPSIZE;
 			cmap_sft = delta % NETLBL_CATMAP_MAPSIZE;
 			c_iter->bitmap[cmap_idx]
-				|= e_iter->maps[cmap_idx] << cmap_sft;
+				|= e_iter->maps[i] << cmap_sft;
 		}
 		e_iter = e_iter->next;
 	}


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