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Test ID:1.3.6.1.4.1.25623.1.0.870729
Category:Red Hat Local Security Checks
Title:RedHat Update for kernel RHSA-2012:0350-01
Summary:The remote host is missing an update for the 'kernel'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'kernel'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issues:

* A buffer overflow flaw was found in the way the Linux kernel's XFS file
system implementation handled links with overly long path names. A local,
unprivileged user could use this flaw to cause a denial of service or
escalate their privileges by mounting a specially-crafted disk.
(CVE-2011-4077, Moderate)

* Flaws in ghash_update() and ghash_final() could allow a local,
unprivileged user to cause a denial of service. (CVE-2011-4081, Moderate)

* A flaw was found in the Linux kernel's Journaling Block Device (JBD). A
local, unprivileged user could use this flaw to crash the system by
mounting a specially-crafted ext3 or ext4 disk. (CVE-2011-4132, Moderate)

* It was found that the kvm_vm_ioctl_assign_device() function in the KVM
(Kernel-based Virtual Machine) subsystem of a Linux kernel did not check if
the user requesting device assignment was privileged or not. A local,
unprivileged user on the host could assign unused PCI devices, or even
devices that were in use and whose resources were not properly claimed by
the respective drivers, which could result in the host crashing.
(CVE-2011-4347, Moderate)

* Two flaws were found in the way the Linux kernel's __sys_sendmsg()
function, when invoked via the sendmmsg() system call, accessed user-space
memory. A local, unprivileged user could use these flaws to cause a denial
of service. (CVE-2011-4594, Moderate)

* The RHSA-2011:1530 kernel update introduced an integer overflow flaw in
the Linux kernel. On PowerPC systems, a local, unprivileged user could use
this flaw to cause a denial of service. (CVE-2011-4611, Moderate)

* A flaw was found in the way the KVM subsystem of a Linux kernel handled
PIT (Programmable Interval Timer) IRQs (interrupt requests) when there was
no virtual interrupt controller set up. A local, unprivileged user on the
host could force this situation to occur, resulting in the host crashing.
(CVE-2011-4622, Moderate)

* A flaw was found in the way the Linux kernel's XFS file system
implementation handled on-disk Access Control Lists (ACLs). A local,
unprivileged user could use this flaw to cause a denial of service or
escalate their privileges by mounting a specially-crafted disk.
(CVE-2012-0038, Moderate)

* A flaw was found in the way the Linux kernel's KVM hypervisor
implementa ...

Description truncated, please see the referenced URL(s) for more information.

Affected Software/OS:
kernel on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Solution:
Please Install the Updated Packages.

CVSS Score:
7.8

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-4077
HPdes Security Advisory: HPSBGN02970
http://marc.info/?l=bugtraq&m=139447903326211&w=2
http://xorl.wordpress.com/2011/12/07/cve-2011-4077-linux-kernel-xfs-readlink-memory-corruption/
http://www.openwall.com/lists/oss-security/2011/10/26/1
http://www.openwall.com/lists/oss-security/2011/10/26/3
http://oss.sgi.com/archives/xfs/2011-10/msg00345.html
http://secunia.com/advisories/48964
Common Vulnerability Exposure (CVE) ID: CVE-2011-4081
http://www.openwall.com/lists/oss-security/2011/10/27/2
Common Vulnerability Exposure (CVE) ID: CVE-2011-4132
BugTraq ID: 50663
http://www.securityfocus.com/bid/50663
http://xorl.wordpress.com/2011/12/08/cve-2011-4132-linux-kernel-jbdjbd2-local-dos/
http://www.openwall.com/lists/oss-security/2011/11/11/6
http://www.openwall.com/lists/oss-security/2011/11/13/4
http://securitytracker.com/id?1026325
http://secunia.com/advisories/48898
SuSE Security Announcement: SUSE-SU-2012:0554 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
SuSE Security Announcement: SUSE-SU-2015:0812 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
Common Vulnerability Exposure (CVE) ID: CVE-2011-4347
http://www.openwall.com/lists/oss-security/2011/11/24/7
Common Vulnerability Exposure (CVE) ID: CVE-2011-4594
http://www.openwall.com/lists/oss-security/2011/12/08/4
Common Vulnerability Exposure (CVE) ID: CVE-2011-4611
http://www.openwall.com/lists/oss-security/2011/12/15/2
Common Vulnerability Exposure (CVE) ID: CVE-2011-4622
BugTraq ID: 51172
http://www.securityfocus.com/bid/51172
http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564
http://www.openwall.com/lists/oss-security/2011/12/21/7
http://www.redhat.com/support/errata/RHSA-2012-0051.html
http://www.securitytracker.com/id?1026559
SuSE Security Announcement: SUSE-SU-2012:0616 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
SuSE Security Announcement: openSUSE-SU-2013:0925 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
Common Vulnerability Exposure (CVE) ID: CVE-2012-0038
http://www.openwall.com/lists/oss-security/2012/01/10/11
Common Vulnerability Exposure (CVE) ID: CVE-2012-0045
http://www.openwall.com/lists/oss-security/2012/01/12/2
Common Vulnerability Exposure (CVE) ID: CVE-2012-0207
http://www.openwall.com/lists/oss-security/2012/01/10/5
CopyrightCopyright (C) 2012 Greenbone Networks GmbH

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