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Message-ID: <2e838ffb-2a57-79ff-812c-3baf554e22f9@redhat.com>
Date: Mon, 8 Aug 2022 17:58:17 +0200
From: David Hildenbrand <david@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE-2022-2590: Linux kernel: Modifying shmem/tmpfs files without
write permissions
On 08.08.22 09:18, David Hildenbrand wrote:
> Hi,
>
> I found a security issue (CVE-2022-2590) in the Linux kernel similar to
> Dirty COW (CVE-2016-5195), however, restricted to shared memory (shmem /
> tmpfs). I notified distributions one week ago and the embargo ended today.
I forgot to add an important part: Nadav Amit raised [1] that the dirty
bit is possibly problematic and essentially participated to the
discovery of this security issue.
s/I found/Nadav and I found/
Credit where credit is due.
[1] https://lore.kernel.org/all/20220619233449.181323-4-namit@vmware.com/
--
Thanks,
David / dhildenb
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