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kernel: xen: off-by-one shift in x86_64 __addr_ok()

🗓️ 06 Sep 2011 21:31:00Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 2 Views

Off-by-one shift in Xen x86_64 __addr_ok() enables 64-bit PV guests to crash host via hypercalls.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux5ia64kernel0:2.6.18-274.3.1.el5kernel-0:2.6.18-274.3.1.el5.ia64.rpm
Red Hat Enterprise Linux5ppc64kernel0:2.6.18-274.3.1.el5kernel-0:2.6.18-274.3.1.el5.ppc64.rpm
Red Hat Enterprise Linux5s390xkernel0:2.6.18-274.3.1.el5kernel-0:2.6.18-274.3.1.el5.s390x.rpm
Red Hat Enterprise Linux5x86_64kernel0:2.6.18-274.3.1.el5kernel-0:2.6.18-274.3.1.el5.x86_64.rpm
Red Hat Enterprise Linux5anykernel0:2.6.18-274.3.1.el5.i686kernel-0:2.6.18-274.3.1.el5.i686.noarch.rpm
Red Hat Enterprise Linux5anykernel-pae0:2.6.18-274.3.1.el5.i686kernel-PAE-0:2.6.18-274.3.1.el5.i686.noarch.rpm
Red Hat Enterprise Linux5anykernel-pae-debuginfo0:2.6.18-274.3.1.el5.i686kernel-PAE-debuginfo-0:2.6.18-274.3.1.el5.i686.noarch.rpm
Red Hat Enterprise Linux5anykernel-pae-devel0:2.6.18-274.3.1.el5.i686kernel-PAE-devel-0:2.6.18-274.3.1.el5.i686.noarch.rpm
Red Hat Enterprise Linux5ia64kernel-debug0:2.6.18-274.3.1.el5kernel-debug-0:2.6.18-274.3.1.el5.ia64.rpm
Red Hat Enterprise Linux5ppc64kernel-debug0:2.6.18-274.3.1.el5kernel-debug-0:2.6.18-274.3.1.el5.ppc64.rpm
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27 Jun 2026 15:04Current
7.2High risk
Vulners AI Score7.2
CVSS 25.5
EPSS0.0059
2