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Date: Thu, 21 May 2009 20:26:21 -0400 (EDT)
From: "Steven M. Christey" <>
To: OSS Security List <>
Subject: Re: CVE Request: XEN local denial of service

More specific information on Xen's affected versions would be appreciated.
I made a guess based on the version that was released a few days after the

- Steve

Name: CVE-2009-1758
Status: Candidate
Reference: MLIST:[Xen-devel] 20090513 [PATCH] linux/i386: hypervisor_callback adjustments
Reference: URL:
Reference: MLIST:[oss-security] 20090514 CVE Request: XEN local denial of service
Reference: URL:

The hypervisor_callback function in Xen, possibly before 3.4.0, as
applied to the Linux kernel 2.6.30-rc4, 2.6.18, and probably other
versions allows guest user applications to cause a denial of service
(kernel oops) of the guest OS by triggering a segmentation fault in
"certain address ranges."

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