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centosCentOS ProjectCESA-2010:0898
HistoryDec 14, 2010 - 1:21 a.m.

kmod, kvm security update

2010-12-1401:21:04
CentOS Project
lists.centos.org
49

4.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

0.001 Low

EPSS

Percentile

24.9%

CentOS Errata and Security Advisory CESA-2010:0898

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.

A flaw was found in the way QEMU-KVM handled the reloading of fs and gs
segment registers when they had invalid selectors. A privileged host user
with access to “/dev/kvm” could use this flaw to crash the host (denial of
service). (CVE-2010-3698)

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

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2010-December/079375.html
https://lists.centos.org/pipermail/centos-announce/2010-December/079376.html

Affected packages:
kmod-kvm
kvm
kvm-qemu-img
kvm-tools

Upstream details at:
https://access.redhat.com/errata/RHSA-2010:0898

4.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

0.001 Low

EPSS

Percentile

24.9%