Bug#480390: linux-2.6: CVE-2008-1615 local denial of service on amd64

05-09-2008, 05:10 PM

Package: linux-2.6
Severity: grave
Tags: security

Hi,
the following CVE (Common Vulnerabilities & Exposures) id was
published for linux-2.6.

CVE-2008-1615[0]:
| Linux kernel 2.6.18, and possibly other versions, when running on
| AMD64 architectures, allows local users to cause a denial of service
| (crash) via certain ptrace calls.

This issue affects the 2.6 kernels in Debian on amd64.

Steps to reproduce:
wget -O x86_64-cs.c http://sources.redhat.com/cgi-bin/cvsweb.cgi/~checkout~/tests/ptrace-tests/tests/x86_64-cs.c?cvsroot=systemtap
gcc -o x86_64-cs x86_64-cs.c -Wall -ggdb2 -D_GNU_SOURCE
./x86_64-cs

Redhat used https://bugzilla.redhat.com/attachment.cgi?id=294062
to patch this, unfortunately this patch does not work for >
2.6.24 and I have no idea about porting it.

If you fix the vulnerability please also make sure to include the
CVE id in your changelog entry.

For further information see:

[0] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1615
http://security-tracker.debian.net/tracker/CVE-2008-1615

--
Nico Golde - http://www.ngolde.de - nion@jabber.ccc.de - GPG: 0x73647CFF
For security reasons, all text in this mail is double-rot13 encrypted.

05-09-2008, 05:52 PM

fixed 480390 2.6.25-1
thanks

On Fri, May 09, 2008 at 07:10:54PM +0200, Nico Golde wrote:
> the following CVE (Common Vulnerabilities & Exposures) id was
> published for linux-2.6.

A similar patch got in 2.6.25 but without any security identifier and is
not at all reproducible with the etch Xen kernel.

Bastian

--
Four thousand throats may be cut in one night by a running man.
-- Klingon Soldier, "Day of the Dove", stardate unknown

05-09-2008, 05:59 PM

Hi Bastian,
* Bastian Blank <waldi@debian.org> [2008-05-09 19:54]:
> fixed 480390 2.6.25-1
> thanks
>
> On Fri, May 09, 2008 at 07:10:54PM +0200, Nico Golde wrote:
> > the following CVE (Common Vulnerabilities & Exposures) id was
> > published for linux-2.6.
>
> A similar patch got in 2.6.25 but without any security identifier and is
> not at all reproducible with the etch Xen kernel.

Thanks for this information, added this to the security
tracker. I reproduced this on 2.6.24 and since I didn't see
any upstream statement regarding this I thought this would
still affect 2.6.25.
Cheers
Nico
--
Nico Golde - http://www.ngolde.de - nion@jabber.ccc.de - GPG: 0x73647CFF
For security reasons, all text in this mail is double-rot13 encrypted.