National Cyber-Alert System
Vulnerability Summary for CVE-2009-3638
Original release date:10/29/2009
Last revised:11/20/2009
Source:
US-CERT/NIST
Overview
Integer overflow in the kvm_dev_ioctl_get_supported_cpuid function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.31.4 allows local users to have an unspecified impact via a KVM_GET_SUPPORTED_CPUID request to the kvm_arch_dev_ioctl function.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
Official Statement from Red Hat (10/30/2009)
Not vulnerable. This issue did not affect the versions of KVM as shipped with Red Hat Enterprise Linux 5. KVM is only supported on AMD64/x86_64 architecture on Red Hat Enterprise Linux 5.
References to Advisories, Solutions, and Tools
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External Source: BID
Name: 36803
Type: Patch Information
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6a54435560efdab1a08f429a954df4d6c740bddf
Type: Patch Information
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=530515
External Source: XF
Name: linux-kernel-supportedcpuid-code-execution(53934)
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc4
Type: Advisory
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.4
Type: Advisory
External Source: MLIST
Name: [oss-security] 20091023 Re: CVE request: kvm: integer overflow in kvm_dev_ioctl_get_supported_cpuid()
External Source: MLIST
Name: [oss-security] 20091023 CVE request: kvm: integer overflow in kvm_dev_ioctl_get_supported_cpuid()
