CVE-2010-0306

Medium

Description

The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298.

SeverityMedium

CVSS4.1

Exploit probability—

ProductKvm

PublishedFeb 12, 2010

First seenFeb 12, 2010

How to fix

Vendor advisories

rhn.redhat.com/errata/RHSA-2010-0088.html
rhn.redhat.com/errata/RHSA-2010-0095.html

Affected products

Product	Affected versions	Fixed in
kvm_qumranet kvm	83	—

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