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Date: Sat, 6 Aug 2022 21:10:22 +0200
From: Solar Designer <>
To: "?????????(??????)" <>
Cc: oss-security <>
Subject: Re: CVE-2022-1972: out-of-bound write in Linux netfilter subsystem leads to local privilege escalation

On Thu, Jun 02, 2022 at 10:21:36AM +0800, ?????????(??????) wrote:
> An out-of-bound write vulnerability was identified within the
> netfilter subsystem
> which can be exploited to achieve privilege escalation to root.
> In order to trigger the issue it requires the ability to create user/net
> namespaces.
> this vulnerability comes from commit(
> This issue has been fixed within the following commit:


> =*=*=*=*=*=*=*=*=  Credit  =*=*=*=*=*=*=*=*=
> ziming zhang(@ezrak1e) from Ant Group Light-Year Security Lab

Apparently, this vulnerability was also independently discovered by
Arthur Mongodin during an internship at Randorisec, who blogged about it
on June 13 here:

and posted an infoleak PoC here:


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