oss-security - Re: CVE-2018-1130: Linux kernel: dccp: a null pointer dereference in net/dccp/output.c:dccp_write

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Wed, 23 May 2018 16:49:58 +0200
From: Andrey Konovalov <andreyknvl@...il.com>
To: oss-security@...ts.openwall.com, vdronov@...hat.com
Subject: Re: CVE-2018-1130: Linux kernel: dccp: a null pointer
 dereference in net/dccp/output.c:dccp_write_xmit

On Thu, May 10, 2018 at 2:05 PM, Vladis Dronov <vdronov@...hat.com> wrote:
> Hello,
>
> A null pointer dereference in dccp_write_xmit() function in net/dccp/output.c
> in the Linux kernel before v4.16-rc7 allows a local user to cause a denial of
> service by a number of certain crafted system calls.
>
> References:
>
> https://syzkaller.appspot.com/bug?id=833568de043e0909b2aeaef7be136db39d21ba94
>
> https://marc.info/?t=152036611500003&r=1&w=2
>
> An upstream patch:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f93df79aeefc3add4e4b31a752600f834236e2
>
> Best regards,
> Vladis Dronov | Red Hat, Inc. | Product Security Engineer

Hi Vladis,

I've been wondering, how do you choose which bugs you request CVEs
for? Syzbot reported a few hundreds of them over the last few months
and a decent fraction of them looks scarier than a null pointer
dereference.

Thanks!

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.