|Bugzilla:||1029111: CVE-2013-4554 kernel: xen: hypercalls exposed to privilege rings 1 and 2 of HVM guests|
The MITRE CVE dictionary describes this issue as:
Xen 3.0.3 through 4.1.x (possibly 126.96.36.199), 4.2.x (possibly 4.2.3), and 4.3.x (possibly 4.3.1) does not properly prevent access to hypercalls, which allows local guest users to gain privileges via a crafted application running in ring 1 or 2.
This issue did affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5, however please note that none of the guest operating system supported in Red Hat Enterprise Linux 5 are using the vulnerable set of rings of protection for privilege separation.
This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.
CVSS v2 metrics
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Red Hat security errata
|Red Hat Enterprise Linux version 5 (kernel)||RHSA-2014:0285||March 12, 2014|
Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Jan Beulich as the original reporter.
This page is generated automatically and has not been checked for errors or omissions.
For clarification or corrections please contact the Red Hat Security Response Team.