[RHSA-2012:1347-01] Important: kernel security and bug fix update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: kernel security and bug fix update

Advisory ID: RHSA-2012:1347-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1347.html

Issue date: 2012-10-09

CVE Names: CVE-2012-2319 CVE-2012-3412

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1. Summary:

 

Updated kernel packages that fix two security issues and one bug are now

available for Red Hat Enterprise Linux 5.6 Extended Update Support.

 

The Red Hat Security Response Team has rated this update as having

important security impact. Common Vulnerability Scoring System (CVSS) base

scores, which give detailed severity ratings, are available for each

vulnerability from the CVE links in the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux EUS (v. 5.6 server) - i386, ia64, noarch, ppc, s390x, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

This update fixes the following security issues:

 

* A flaw was found in the way socket buffers (skb) requiring TSO (TCP

segment offloading) were handled by the sfc driver. If the skb did not fit

within the minimum-size of the transmission queue, the network card could

repeatedly reset itself. A remote attacker could use this flaw to cause a

denial of service. (CVE-2012-3412, Important)

 

* A buffer overflow flaw was found in the hfs_bnode_read() function in the

HFS Plus (HFS+) file system implementation in the Linux kernel. A local

user able to mount a specially-crafted HFS+ file system image could use

this flaw to cause a denial of service or escalate their privileges.

(CVE-2012-2319, Low)

 

Red Hat would like to thank Ben Hutchings of Solarflare for reporting

CVE-2012-3412.

 

This update also fixes the following bug:

 

* Some subsystems clear the TIF_SIGPENDING flag during error handling in

fork() paths. Previously, if the flag was cleared, the ERESTARTNOINTR error

code could be returned. The underlying source code has been modified so

that the error code is no longer returned. (BZ#855754)

 

Users should upgrade to these updated packages, which contain backported

patches to correct these issues. The system must be rebooted for this

update to take effect.

 

4. Solution:

 

Before applying this update, make sure all previously-released errata

relevant to your system have been applied.

 

This update is available via the Red Hat Network. Details on how to

use the Red Hat Network to apply this update are available at

https://access.redhat.com/knowledge/articles/11258

 

To install kernel packages manually, use "rpm -ivh [package]". Do not

use "rpm -Uvh" as that will remove the running kernel binaries from

your system. You may use "rpm -e" to remove old kernels after

determining that the new kernel functions properly on your system.

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

819471 - CVE-2012-2319 kernel: Buffer overflow in the HFS plus filesystem (different issue than CVE-2009-4020)

844714 - CVE-2012-3412 kernel: sfc: potential remote denial of service through TCP MSS option

 

6. Package List:

 

Red Hat Enterprise Linux EUS (v. 5.6 server):

 

Source:

kernel-2.6.18-238.45.1.el5.src.rpm

 

i386:

kernel-2.6.18-238.45.1.el5.i686.rpm

kernel-PAE-2.6.18-238.45.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-238.45.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-238.45.1.el5.i686.rpm

kernel-debug-2.6.18-238.45.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-238.45.1.el5.i686.rpm

kernel-debug-devel-2.6.18-238.45.1.el5.i686.rpm

kernel-debuginfo-2.6.18-238.45.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-238.45.1.el5.i686.rpm

kernel-devel-2.6.18-238.45.1.el5.i686.rpm

kernel-headers-2.6.18-238.45.1.el5.i386.rpm

kernel-xen-2.6.18-238.45.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-238.45.1.el5.i686.rpm

kernel-xen-devel-2.6.18-238.45.1.el5.i686.rpm

 

ia64:

kernel-2.6.18-238.45.1.el5.ia64.rpm

kernel-debug-2.6.18-238.45.1.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-238.45.1.el5.ia64.rpm

kernel-debug-devel-2.6.18-238.45.1.el5.ia64.rpm

kernel-debuginfo-2.6.18-238.45.1.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-238.45.1.el5.ia64.rpm

kernel-devel-2.6.18-238.45.1.el5.ia64.rpm

kernel-headers-2.6.18-238.45.1.el5.ia64.rpm

kernel-xen-2.6.18-238.45.1.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-238.45.1.el5.ia64.rpm

kernel-xen-devel-2.6.18-238.45.1.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-238.45.1.el5.noarch.rpm

 

ppc:

kernel-2.6.18-238.45.1.el5.ppc64.rpm

kernel-debug-2.6.18-238.45.1.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-238.45.1.el5.ppc64.rpm

kernel-debug-devel-2.6.18-238.45.1.el5.ppc64.rpm

kernel-debuginfo-2.6.18-238.45.1.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-238.45.1.el5.ppc64.rpm

kernel-devel-2.6.18-238.45.1.el5.ppc64.rpm

kernel-headers-2.6.18-238.45.1.el5.ppc.rpm

kernel-headers-2.6.18-238.45.1.el5.ppc64.rpm

kernel-kdump-2.6.18-238.45.1.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-238.45.1.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-238.45.1.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-238.45.1.el5.s390x.rpm

kernel-debug-2.6.18-238.45.1.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-238.45.1.el5.s390x.rpm

kernel-debug-devel-2.6.18-238.45.1.el5.s390x.rpm

kernel-debuginfo-2.6.18-238.45.1.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-238.45.1.el5.s390x.rpm

kernel-devel-2.6.18-238.45.1.el5.s390x.rpm

kernel-headers-2.6.18-238.45.1.el5.s390x.rpm

kernel-kdump-2.6.18-238.45.1.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-238.45.1.el5.s390x.rpm

kernel-kdump-devel-2.6.18-238.45.1.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-238.45.1.el5.x86_64.rpm

kernel-debug-2.6.18-238.45.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-238.45.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-238.45.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-238.45.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-238.45.1.el5.x86_64.rpm

kernel-devel-2.6.18-238.45.1.el5.x86_64.rpm

kernel-headers-2.6.18-238.45.1.el5.x86_64.rpm

kernel-xen-2.6.18-238.45.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-238.45.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-238.45.1.el5.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2012-2319.html

https://www.redhat.com/security/data/cve/CVE-2012-3412.html

https://access.redhat.com/security/updates/classification/#important

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2012 Red Hat, Inc.

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