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

[Eugene Teo <eteo () redhat com>]

Eugene Teo wrote:
> 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)

Not forgetting 9d9f177572d9e4eba0f2e18523b44f90dd51fe74 (ext4) too.

Thanks, Eugene