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Re: CVE-2021-47377: kernel: xen/balloon: use a kernel thread instead a workqueue
- To: gregkh@xxxxxxxxxxxxxxxxxxx
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Mon, 27 May 2024 12:58:16 +0200
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- Cc: cve@xxxxxxxxxx, linux-cve-announce@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "Xen.org security team" <security@xxxxxxx>
- Delivery-date: Mon, 27 May 2024 10:58:27 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,
I'd like to dispute CVE-2021-47377: the issue fixed by upstream commit
8480ed9c2bbd56fc86524998e5f2e3e22f5038f6 can in no way be triggered by
an unprivileged user or by a remote attack of the system, as it requires
initiation of memory ballooning of the running system. This can be done
only by either a host admin or by an admin of the guest which might
suffer the detection of the hanging workqueue.
Please revoke this CVE.
Juergen
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