oss-security - Re: fwd: [vs-plain] Kernel heap overflow in bpf leading to LPE (exploit provided)

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

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

Message-ID: <f19a3fee-a5f1-21be-9104-5b83ab3afc19@iogearbox.net>
Date: Fri, 23 Nov 2018 21:40:28 +0100
From: Daniel Borkmann <daniel@...earbox.net>
To: oss-security@...ts.openwall.com
Cc: greg@...ah.com, ww9210@...il.com
Subject: Re: fwd: [vs-plain] Kernel heap overflow in bpf
 leading to LPE (exploit provided)

On 11/23/2018 07:09 PM, Greg KH wrote:
> On Fri, Nov 23, 2018 at 06:22:09PM +0100, Yves-Alexis Perez wrote:
>> Hi list,
>>
>> we were notified on the Linux distros list of a vulnerability in the bpf
>> subsystem of the Linux kernel.
>>
>> I asked the reported (Wei Wu) if security@k.o had been notified, and
>> this was done in the following mail, leading Eric Dumazet to suggest
>> posting this on netdev.
>>
>> In turn, this has been done just afterwards [1] so the issue is now
>> public. According to the linux-distros list policy, the original
>> reporter should also have made the issue public here, but failed to do
>> that.
>>
>> I'm posting this right now in order to raise awareness for the
>> distributions already including 4.19 in a supported release.
> 
> As was discussed further on one of the threads on this topic, it looks
> like this is a 4.20-rc issue only, and that 4.19 does not have this
> issue.  So it might not be relevant to any distro at all, but I suggest
> that people test themselves to be sure.

Yep, 4.19 does not have this map type, so there is no released kernel
with this issue.

Thanks,
Daniel

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.