From 8dcd7c19f2624b7150edd60da336da0bb5291bef Mon Sep 17 00:00:00 2001 From: Mike O'Connor Date: Wed, 15 Feb 2006 00:17:24 -0500 Subject: [PATCH] [PATCH] XFS ftruncate() bug could expose stale data (CVE-2006-0554) This is CVE-2006-0554 and SGI bug 942658. With certain types of ftruncate() activity on 2.6 kernels, XFS can end up exposing stale data off disk to a user, putting extents where holes should be. Signed-off-by: Chris Wright --- fs/xfs/linux-2.6/xfs_aops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 94d3cdfbf9b80..c4ac008a52017 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -385,7 +385,7 @@ xfs_probe_unmapped_cluster( /* First sum forwards in this page */ do { - if (buffer_mapped(bh)) + if (buffer_mapped(bh) || !buffer_uptodate(bh)) break; total += bh->b_size; } while ((bh = bh->b_this_page) != head); -- 2.47.2