From: Abhijith Das <adas@redhat.com>
To: cluster-devel.redhat.com
Subject: [Cluster-devel] [PATCH][GFS2] Bug 586009 - CVE-2010-1436 kernel: oops while cp from ext3 to gfs2 [rhel-6.0]
Date: Fri, 7 May 2010 17:50:18 -0400 (EDT) [thread overview]
Message-ID: <568290033.251681273269018479.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com> (raw)
In-Reply-To: <924012423.251581273268920873.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
This is the upstream/rhel6 fix for this bug. This patch differs
from the RHEL5 fix (555754) which simply writes to the 8-byte
value field of the quota. In upstream/rhel6 quota code, we're
required to write the entire quota (88 bytes) which can be split
across a page boundary. We check for such quotas, and read/write
the two parts from/to the corresponding pages holding these parts.
With this patch, I don't see the bug anymore using the reproducer
in bz 555754. I successfully ran a couple of simple tests/mounts/
umounts and it doesn't seem like this patch breaks anything else.
Resolves: rhbz#586009
Signed-off-by: Abhi Das <adas@redhat.com>
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next parent reply other threads:[~2010-05-07 21:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <924012423.251581273268920873.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
2010-05-07 21:50 ` Abhijith Das [this message]
2010-05-10 12:56 ` [Cluster-devel] [PATCH][GFS2] Bug 586009 - CVE-2010-1436 kernel: oops while cp from ext3 to gfs2 [rhel-6.0] Steven Whitehouse
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