Common Vulnerabilities and Exposures assigned an identifier CVE-2009-2287 to the following vulnerability: The kvm_arch_vcpu_ioctl_set_sregs function in the KVM in Linux kernel 2.6 before 2.6.30, when running on x86 systems, does not validate the page table root in a KVM_SET_SREGS call, which allows local users to cause a denial of service (crash or hang) via a crafted cr3 value, which triggers a NULL pointer dereference in the gfn_to_rmap function. References: http://www.openwall.com/lists/oss-security/2009/06/30/1 http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git;a=blob;f=queue-2.6.30/kvm-x86-check-for-cr3-validity-in-ioctl_set_sregs.patch;h=b48a47dad2cf76358b327368f80c0805e6370c68; http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=59839dfff5eabca01cc4e20b45797a60a80af8cb http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2687641&group_id=180599 http://bugs.gentoo.org/show_bug.cgi?id=277375
This issue affects current version in F10 (kernel-2.6.29.6-93.fc10), F11 (kernel-2.6.29.6-213.fc11) not checked.
just a guess by looking at the patch ... can't it have a similar problem with cr2 ? http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=59839dfff5eabca01cc4e20b45797a60a80af8cb