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Date: Fri, 23 Nov 2018 21:40:28 +0100
From: Daniel Borkmann <>
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.


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