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CVE-2012-4544

Status Candidate

Overview

The PV domain builder in Xen 4.2 and earlier does not validate the size of the kernel or ramdisk (1) before or (2) after decompression, which allows local guest administrators to cause a denial of service (domain 0 memory consumption) via a crafted (a) kernel or (b) ramdisk.

Related Files

Debian Security Advisory 2636-2
Posted Mar 3, 2013
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2636-2 - A regression in combination with pygrub has been discovered. For the stable distribution (squeeze), these problems have been fixed in version 4.0.1-5.8.

tags | advisory
systems | linux, debian
advisories | CVE-2012-4544, CVE-2012-5511, CVE-2012-5634, CVE-2013-0153
SHA-256 | ee72009eb00a50329387ebd0bcc9e9077fd8fb38c3b6a530a660483f4d1cb5f9
Debian Security Advisory 2636-1
Posted Mar 2, 2013
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2636-1 - Multiple vulnerabilities have been discovered in the Xen hypervisor.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2012-4544, CVE-2012-5511, CVE-2012-5634, CVE-2013-0153
SHA-256 | c96f4d53b3c0573c21aa6543099fec9ebade88332214c9645241ab142e550f0b
Red Hat Security Advisory 2013-0241-01
Posted Feb 7, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-0241-01 - The xen packages contain administration tools and the xend service for managing the kernel-xen kernel for virtualization on Red Hat Enterprise Linux. A flaw was found in the way libxc, the Xen control library, handled excessively large kernel and ramdisk images when starting new guests. A privileged guest user in a para-virtualized guest could create a crafted kernel or ramdisk image that, when attempting to use it during guest start, could result in an out-of-memory condition in the privileged domain.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2012-4544
SHA-256 | fd11e6102116bd2d5be286f2b61f3f09ef71df970c4fa155008b6fe5ad14aca5
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