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CVE-2009-4031

Status Candidate

Overview

The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support.

Related Files

Ubuntu Security Notice 894-1
Posted Feb 5, 2010
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 894-1 - Various kernel related vulnerabilities have been addressed. It was discovered that FUSE did not correctly check certain requests. It was discovered that KVM did not correctly decode certain guest instructions. It was discovered that the OHCI fireware driver did not correctly handle certain ioctls. It was discovered that "print-fatal-signals" reporting could show arbitrary kernel memory contents.

tags | advisory, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2009-4020, CVE-2009-4021, CVE-2009-4031, CVE-2009-4138, CVE-2009-4141, CVE-2009-4308, CVE-2009-4536, CVE-2009-4538, CVE-2010-0003, CVE-2010-0006, CVE-2010-0007, CVE-2010-0291
SHA-256 | ced2b4a6f9d25c5881707f27db905b8d09605d4401a3b4c2586f9a6c37b78d18
Debian Linux Security Advisory 1962-1
Posted Dec 23, 2009
Authored by Debian | Site debian.org

Debian Linux Security Advisory 1962-1 - Several vulnerabilities have been discovered in kvm, a full virtualization system.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2009-3638, CVE-2009-3722, CVE-2009-4031
SHA-256 | c9480f11858d4b9c77e1808e9c627e7bc6f853a9d658853abb9245d86064d791
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