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Re: CVE-2024-26908: x86/xen: Add some null pointer checking to smp.c


  • To: gregkh@xxxxxxxxxxxxxxxxxxx
  • From: Juergen Gross <jgross@xxxxxxxx>
  • Date: Mon, 29 Apr 2024 13:53:44 +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, 29 Apr 2024 11:53:55 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Hi,

I'd like to dispute CVE-2024-26908: the issue fixed by upstream commit
3693bb4465e6e32a204a5b86d3ec7e6b9f7e67c2 can in no way be triggered by
an unprivileged user or by a remote attack of the system, as it requires
hotplug of (virtual) cpus to the running system. This can be done only by
either a host admin or by an admin of the guest which might suffer the
out-of-memory situation.

Please revoke this CVE.


Juergen

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