Re: CVE-2008-3528 Linux kernel ext[234] directory corruption DoS

[Eugene Teo <eteo () redhat com>]

Eugene Teo wrote:
> The ext[234] filesystem code fails to properly handle corrupted data
> structures. With a mounted filesystem image or partition that have
> corrupted dir->i_size and dir->i_blocks, a user performing either a read
> or write operation on the mounted image or partition can lead to a
> possible denial of service.
>
> References:
> https://bugzilla.redhat.com/show_bug.cgi?id=459577
> http://lkml.org/lkml/2008/9/13/98
> http://lkml.org/lkml/2008/9/13/99
> http://lkml.org/lkml/2008/9/17/371
>
> The issue is not fixed upstream yet, but the patch has been added to -mm
>  tree. I will update this email as soon as I know the commit hashes.
> This issue has been allocated with CVE-2008-3528.

Upstream commits: cdbf6dba28e8e6268c8420857696309470009fd9 (ext3)
                  bd39597cbd42a784105a04010100e27267481c67 (ext2)

Thanks, Eugene