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Groups > linux.debian.security > #5039 > unrolled thread

CVE-2016-7117 Remote code execution vulnerability in kernel networking subsystem

Started byJan Lühr <jan@jluehr.de>
First post2016-10-04 19:00 +0200
Last post2016-10-05 10:00 +0200
Articles 7 — 4 participants

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Contents

  CVE-2016-7117 Remote code execution vulnerability in kernel  networking subsystem Jan Lühr <jan@jluehr.de> - 2016-10-04 19:00 +0200
    Re: CVE-2016-7117 Remote code execution vulnerability in kernel  networking subsystem Felix Knecht <debian@felixknecht.de> - 2016-10-04 19:50 +0200
      Re: CVE-2016-7117 Remote code execution vulnerability in kernel  networking subsystem Nicholas Luedtke <nicholas.luedtke@hpe.com> - 2016-10-04 20:00 +0200
        Re: CVE-2016-7117 Remote code execution vulnerability in kernel  networking subsystem Jan Lühr <jan@jluehr.de> - 2016-10-05 00:00 +0200
          Re: CVE-2016-7117 Remote code execution vulnerability in kernel  networking subsystem Salvatore Bonaccorso <carnil@debian.org> - 2016-10-05 07:00 +0200
            Re: CVE-2016-7117 Remote code execution vulnerability in kernel  networking subsystem Jan Lühr <jan@jluehr.de> - 2016-10-05 10:00 +0200
              Re: CVE-2016-7117 Remote code execution vulnerability in kernel  networking subsystem Salvatore Bonaccorso <carnil@debian.org> - 2016-10-05 10:00 +0200

#5039 — CVE-2016-7117 Remote code execution vulnerability in kernel networking subsystem

FromJan Lühr <jan@jluehr.de>
Date2016-10-04 19:00 +0200
SubjectCVE-2016-7117 Remote code execution vulnerability in kernel networking subsystem
Message-ID<soBep-5lJ-5@gated-at.bofh.it>

[Multipart message — attachments visible in raw view] — view raw

Hello,

CVE-2016-7117 was patched in Android today.I don't see much information
right now. The title is rather frightening - the issue appears to be urgent.

Can you confirm, that common Debian installation are unaffected and
cannot be taken over via CVE-2016-7117?
If not, I'd like to shut down a few boxes, unless there's a patch or
work-around.

Greetz,
yanosz
-- 
There's a ripped off cord
To my TV screen
With a note saying:
"Im not afraid to dream"
-- Donkey Boy, Crazy Something Normal

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#5040

FromFelix Knecht <debian@felixknecht.de>
Date2016-10-04 19:50 +0200
Message-ID<soC0N-5S0-19@gated-at.bofh.it>
In reply to#5039
On 10/04/2016 06:38 PM, Jan Lühr wrote:
> CVE-2016-7117 was patched in Android today.I don't see much information
> right now. The title is rather frightening - the issue appears to be urgent.

The following upstream kernel commit is referenced in the security bulletin:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d

No idea if this is fixed in Debian though.

Felix

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#5041

FromNicholas Luedtke <nicholas.luedtke@hpe.com>
Date2016-10-04 20:00 +0200
Message-ID<soCau-5Vn-19@gated-at.bofh.it>
In reply to#5040

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On 10/04/2016 11:40 AM, Felix Knecht wrote:

> On 10/04/2016 06:38 PM, Jan Lühr wrote:
>> CVE-2016-7117 was patched in Android today.I don't see much information
>> right now. The title is rather frightening - the issue appears to be urgent.
> The following upstream kernel commit is referenced in the security bulletin:
>
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d
>
> No idea if this is fixed in Debian though.
>
> Felix
>
Looks like it was picked up when Debian rolled to 3.16.36-1.

-- 
Nicholas Luedtke
HPE Linux Security, Hewlett-Packard Enterprise

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#5042

FromJan Lühr <jan@jluehr.de>
Date2016-10-05 00:00 +0200
Message-ID<soFUJ-8jf-5@gated-at.bofh.it>
In reply to#5041

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Hello,
Am 10/04/2016 um 07:57 PM schrieb Nicholas Luedtke:
> On 10/04/2016 11:40 AM, Felix Knecht wrote:
> 
>> On 10/04/2016 06:38 PM, Jan Lühr wrote:
>>> CVE-2016-7117 was patched in Android today.I don't see much information
>>> right now. The title is rather frightening - the issue appears to be urgent.
>> The following upstream kernel commit is referenced in the security bulletin:
>>
>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d
>>
>> No idea if this is fixed in Debian though.
>>
>> Felix
>>
> Looks like it was picked up when Debian rolled to 3.16.36-1.

Thanks for the info - if Felix is right, then 4.7 (jessie backports) is
secure, since it was released months after the fix was pushed to the
mainline kernel.

However, it's somewhat strange that a bug labeled "Linux Kernel
Use-After-Free Remote Code Execution Vulnerability", concerning a lot of
kernels released in the last years
(http://www.securityfocus.com/bid/93304) seem to be fixed in android
only. Do you know any details?

Anyway, using jessie-backports seem to help, thus I'm going for it...

Thanks,
Greetz, Jan
-- 
There's a ripped off cord
To my TV screen
With a note saying:
"Im not afraid to dream"
-- Donkey Boy, Crazy Something Normal

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#5043

FromSalvatore Bonaccorso <carnil@debian.org>
Date2016-10-05 07:00 +0200
Message-ID<soMtb-4lJ-3@gated-at.bofh.it>
In reply to#5042
Hi,

On Tue, Oct 04, 2016 at 11:54:12PM +0200, Jan Lühr wrote:
> Hello,
> Am 10/04/2016 um 07:57 PM schrieb Nicholas Luedtke:
> > On 10/04/2016 11:40 AM, Felix Knecht wrote:
> > 
> >> On 10/04/2016 06:38 PM, Jan Lühr wrote:
> >>> CVE-2016-7117 was patched in Android today.I don't see much information
> >>> right now. The title is rather frightening - the issue appears to be urgent.
> >> The following upstream kernel commit is referenced in the security bulletin:
> >>
> >> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d
> >>
> >> No idea if this is fixed in Debian though.
> >>
> >> Felix
> >>
> > Looks like it was picked up when Debian rolled to 3.16.36-1.
> 
> Thanks for the info - if Felix is right, then 4.7 (jessie backports) is
> secure, since it was released months after the fix was pushed to the
> mainline kernel.
> 
> However, it's somewhat strange that a bug labeled "Linux Kernel
> Use-After-Free Remote Code Execution Vulnerability", concerning a lot of
> kernels released in the last years
> (http://www.securityfocus.com/bid/93304) seem to be fixed in android
> only. Do you know any details?
> 
> Anyway, using jessie-backports seem to help, thus I'm going for it...

I updated the security-tracker information for CVE-2016-7117:

https://security-tracker.debian.org/tracker/CVE-2016-7117 . The fix is
as well included in 3.16.36-1.

HTH,

Regards,
Salvatore

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#5044

FromJan Lühr <jan@jluehr.de>
Date2016-10-05 10:00 +0200
Message-ID<soPho-6eP-1@gated-at.bofh.it>
In reply to#5043

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Hello,


Am 10/05/2016 um 06:52 AM schrieb Salvatore Bonaccorso:
> On Tue, Oct 04, 2016 at 11:54:12PM +0200, Jan Lühr wrote:
>> Hello,
>> Am 10/04/2016 um 07:57 PM schrieb Nicholas Luedtke:
>>> On 10/04/2016 11:40 AM, Felix Knecht wrote:
>>>
>>>> On 10/04/2016 06:38 PM, Jan Lühr wrote:
>>>>> CVE-2016-7117 was patched in Android today.I don't see much information
>>>>> right now. The title is rather frightening - the issue appears to be urgent.
>>>> The following upstream kernel commit is referenced in the security bulletin:
>>>>
>>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d
>>>>
>>>> No idea if this is fixed in Debian though.
>>>>
>>>> Felix
>>>>
>>> Looks like it was picked up when Debian rolled to 3.16.36-1.
> I updated the security-tracker information for CVE-2016-7117:
> 
> https://security-tracker.debian.org/tracker/CVE-2016-7117 . The fix is
> as well included in 3.16.36-1.

Thanks for the info!
Updating dsa-3659 may help confused people like me ;-).

Greetz,
yanosz

-- 
-- 
There's a ripped off cord
To my TV screen
With a note saying:
"Im not afraid to dream"
-- Donkey Boy, Crazy Something Normal

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#5045

FromSalvatore Bonaccorso <carnil@debian.org>
Date2016-10-05 10:00 +0200
Message-ID<soPho-6eP-9@gated-at.bofh.it>
In reply to#5044
Hi Jan,

On Wed, Oct 05, 2016 at 09:49:28AM +0200, Jan Lühr wrote:
> Hello,
> 
> 
> Am 10/05/2016 um 06:52 AM schrieb Salvatore Bonaccorso:
> > On Tue, Oct 04, 2016 at 11:54:12PM +0200, Jan Lühr wrote:
> >> Hello,
> >> Am 10/04/2016 um 07:57 PM schrieb Nicholas Luedtke:
> >>> On 10/04/2016 11:40 AM, Felix Knecht wrote:
> >>>
> >>>> On 10/04/2016 06:38 PM, Jan Lühr wrote:
> >>>>> CVE-2016-7117 was patched in Android today.I don't see much information
> >>>>> right now. The title is rather frightening - the issue appears to be urgent.
> >>>> The following upstream kernel commit is referenced in the security bulletin:
> >>>>
> >>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d
> >>>>
> >>>> No idea if this is fixed in Debian though.
> >>>>
> >>>> Felix
> >>>>
> >>> Looks like it was picked up when Debian rolled to 3.16.36-1.
> > I updated the security-tracker information for CVE-2016-7117:
> > 
> > https://security-tracker.debian.org/tracker/CVE-2016-7117 . The fix is
> > as well included in 3.16.36-1.
> 
> Thanks for the info!
> Updating dsa-3659 may help confused people like me ;-).

I'm a bit against it doing any further change to the text for
DSA-3659. The DSA was for the CVEs included in the 3.16.36-1+deb8u1,
3.16.36-1 was back then already accepted for the next point release
and the fix is in the 3.16.36-1 part of the upload, not in the
3.16.36-1+deb8u1 upload for DSA-3659.

I hope though the direct link to the CVE, as
https://security-tracker.debian.org/tracker/CVE-2016-7117 is helpfull
enough.

Thanks though for the comment!

Regards,
Salvatore

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