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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2010:0088
The remote host is missing updates announced in
advisory RHSA-2010:0088.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for
the standard Red Hat Enterprise Linux kernel.

The x86 emulator implementation was missing a check for the Current
Privilege Level (CPL) and I/O Privilege Level (IOPL). A user in a guest
could leverage these flaws to cause a denial of service (guest crash) or
possibly escalate their privileges within that guest. (CVE-2010-0298,

A flaw was found in the Programmable Interval Timer (PIT) emulation. Access
to the internal data structure pit_state, which represents the data state
of the emulated PIT, was not properly validated in the pit_ioport_read()
function. A privileged guest user could use this flaw to crash the host.

A flaw was found in the USB passthrough handling code. A specially-crafted
USB packet sent from inside a guest could be used to trigger a buffer
overflow in the usb_host_handle_control() function, which runs under the
QEMU-KVM context on the host. A user in a guest could leverage this flaw to
cause a denial of service (guest hang or crash) or possibly escalate their
privileges within the host. (CVE-2010-0297)

All KVM users should upgrade to these updated packages, which contain
backported patches to resolve these issues. Note: The procedure in the
Solution section must be performed before this update will take effect.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : High

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2010-0297
BugTraq ID: 38158
RedHat Security Advisories: RHSA-2010:0088
XForce ISS Database: kernel-usb-bo(56194)
Common Vulnerability Exposure (CVE) ID: CVE-2010-0298
Debian Security Information: DSA-1996 (Google Search)
RedHat Security Advisories: RHSA-2010:0095
Common Vulnerability Exposure (CVE) ID: CVE-2010-0306
Common Vulnerability Exposure (CVE) ID: CVE-2010-0309
CopyrightCopyright (c) 2010 E-Soft Inc.

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