Test ID:	1.3.6.1.4.1.25623.1.0.881216
Category:	CentOS Local Security Checks
Title:	CentOS Update for kmod-kvm CESA-2012:0676 centos5
Summary:	The remote host is missing an update for the 'kmod-kvm'; package(s) announced via the referenced advisory.
Description:	Summary: The remote host is missing an update for the 'kmod-kvm' package(s) announced via the referenced advisory. Vulnerability Insight: 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 the KVM_CREATE_IRQCHIP ioctl was handled. Calling this ioctl when at least one virtual CPU (VCPU) already existed could lead to a NULL pointer dereference later when the VCPU is scheduled to run. A malicious user in the kvm group on the host could use this flaw to crash the host. (CVE-2012-1601) A flaw was found in the way device memory was handled during guest device removal. Upon successful device removal, memory used by the device was not properly unmapped from the corresponding IOMMU or properly released from the kernel, leading to a memory leak. A malicious user in the kvm group on the host who has the ability to assign a device to a guest could use this flaw to crash the host. (CVE-2012-2121) This update also fixes the following bug: * An off-by-one error in the QEMU guest's memory management could, in rare cases, cause QEMU-KVM to crash due to a segmentation fault in tb_invalidate_phys_page_range() if a device initiated DMA into a specific guest address. In a reported case, this issue presented on a system that had a guest using the 8139cp network driver. (BZ#816207) All users of kvm are advised to upgrade to these updated packages, which contain backported patches to correct these issues. Note that the procedure in the Solution section must be performed before this update will take effect. Affected Software/OS: kmod-kvm on CentOS 5 Solution: Please install the updated packages. CVSS Score: 4.9 CVSS Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2012-1601 1026897 http://www.securitytracker.com/id?1026897 49928 http://secunia.com/advisories/49928 DSA-2469 http://www.debian.org/security/2012/dsa-2469 RHSA-2012:0571 http://rhn.redhat.com/errata/RHSA-2012-0571.html RHSA-2012:0676 http://rhn.redhat.com/errata/RHSA-2012-0676.html SUSE-SU-2012:1679 https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html [oss-security] 20120329 Re: CVE request -- kernel: kvm: irqchip_in_kernel() and vcpu->arch.apic inconsistency http://www.openwall.com/lists/oss-security/2012/03/30/1 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.6 https://bugzilla.redhat.com/show_bug.cgi?id=808199 https://github.com/torvalds/linux/commit/9c895160d25a76c21b65bad141b08e8d4f99afef openSUSE-SU-2013:0925 http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html Common Vulnerability Exposure (CVE) ID: CVE-2012-2121 1027083 http://www.securitytracker.com/id?1027083 50732 http://secunia.com/advisories/50732 RHSA-2012:0743 http://rhn.redhat.com/errata/RHSA-2012-0743.html USN-1577-1 http://www.ubuntu.com/usn/USN-1577-1 USN-2036-1 http://www.ubuntu.com/usn/USN-2036-1 USN-2037-1 http://www.ubuntu.com/usn/USN-2037-1 [oss-security] 20120419 Re: CVE request -- kernel: kvm: device assignment page leak http://www.openwall.com/lists/oss-security/2012/04/19/16 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4 https://bugzilla.redhat.com/show_bug.cgi?id=814149 https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195
Copyright	Copyright (C) 2012 Greenbone AG

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