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Red Hat Enterprise Linux 5 RHSA-2014:1143-01 Moderate: Kernel DoS Issue

Calendar Sep 03, 2014 • User Avatar LinuxSecurity Advisories
5 - 9 min read
Redhat Large Esm H500
Topics%20covered

Topics Covered

security advisory kernel update DoS issue Red Hat Enterprise Linux patches Moderate severity audit rules
Updated kernel packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having Moderate security [More...] 
====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: kernel security and bug fix update
Advisory ID:       RHSA-2014:1143-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2014:1143.html
Issue date:        2014-09-03
CVE Names:         CVE-2014-3917 
====================================================================
1. Summary:

Updated kernel packages that fix one security issue and several bugs are
now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Moderate security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64

3. Description:

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

* An out-of-bounds memory access flaw was found in the Linux kernel's
system call auditing implementation. On a system with existing audit rules
defined, a local, unprivileged user could use this flaw to leak kernel
memory to user space or, potentially, crash the system. (CVE-2014-3917,
Moderate)

This update also fixes the following bugs:

* A bug in the journaling code (jbd and jbd2) could, under very heavy
workload of fsync() operations, trigger a BUG_ON and result in a kernel
oops. Also, fdatasync() could fail to immediately write out changes in the
file size only. These problems have been resolved by backporting a series
of patches that fixed these problems in the respective code on Red Hat
Enterprise Linux 6. This update also improves performance of ext3 and ext4
file systems. (BZ#1116027)

* Due to a bug in the ext4 code, the fdatasync() system call did not force
the inode size change to be written to the disk if it was the only metadata
change in the file. This could result in the wrong inode size and possible
data loss if the system terminated unexpectedly. The code handling inode
updates has been fixed and fdatasync() now writes data to the disk as
expected in this situation. (BZ#1117665)

* A workaround to a DMA read problem in the tg3 driver was incorrectly
applied to the whole Broadcom 5719 and 5720 chipset family. This workaround
is valid only to the A0 revision of the 5719 chips and for other revisions
and chips causes occasional Tx timeouts. This update correctly applies the
aforementioned workaround only to the A0 revision of the 5719 chips.
(BZ#1121017)

* Due to a bug in the page writeback code, the system could become
unresponsive when being under memory pressure and heavy NFS load. This
update fixes the code responsible for handling of dirty pages, and dirty
page write outs no longer flood the work queue. (BZ#1125246)

All kernel users are advised to 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/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 (https://bugzilla.redhat.com/):

1102571 - CVE-2014-3917 kernel: DoS with syscall auditing

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
kernel-2.6.18-371.12.1.el5.src.rpm

i386:
kernel-2.6.18-371.12.1.el5.i686.rpm
kernel-PAE-2.6.18-371.12.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-371.12.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-371.12.1.el5.i686.rpm
kernel-debug-2.6.18-371.12.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-371.12.1.el5.i686.rpm
kernel-debug-devel-2.6.18-371.12.1.el5.i686.rpm
kernel-debuginfo-2.6.18-371.12.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-371.12.1.el5.i686.rpm
kernel-devel-2.6.18-371.12.1.el5.i686.rpm
kernel-headers-2.6.18-371.12.1.el5.i386.rpm
kernel-xen-2.6.18-371.12.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-371.12.1.el5.i686.rpm
kernel-xen-devel-2.6.18-371.12.1.el5.i686.rpm

noarch:
kernel-doc-2.6.18-371.12.1.el5.noarch.rpm

x86_64:
kernel-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debug-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-371.12.1.el5.x86_64.rpm
kernel-devel-2.6.18-371.12.1.el5.x86_64.rpm
kernel-headers-2.6.18-371.12.1.el5.x86_64.rpm
kernel-xen-2.6.18-371.12.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-371.12.1.el5.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
kernel-2.6.18-371.12.1.el5.src.rpm

i386:
kernel-2.6.18-371.12.1.el5.i686.rpm
kernel-PAE-2.6.18-371.12.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-371.12.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-371.12.1.el5.i686.rpm
kernel-debug-2.6.18-371.12.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-371.12.1.el5.i686.rpm
kernel-debug-devel-2.6.18-371.12.1.el5.i686.rpm
kernel-debuginfo-2.6.18-371.12.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-371.12.1.el5.i686.rpm
kernel-devel-2.6.18-371.12.1.el5.i686.rpm
kernel-headers-2.6.18-371.12.1.el5.i386.rpm
kernel-xen-2.6.18-371.12.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-371.12.1.el5.i686.rpm
kernel-xen-devel-2.6.18-371.12.1.el5.i686.rpm

ia64:
kernel-2.6.18-371.12.1.el5.ia64.rpm
kernel-debug-2.6.18-371.12.1.el5.ia64.rpm
kernel-debug-debuginfo-2.6.18-371.12.1.el5.ia64.rpm
kernel-debug-devel-2.6.18-371.12.1.el5.ia64.rpm
kernel-debuginfo-2.6.18-371.12.1.el5.ia64.rpm
kernel-debuginfo-common-2.6.18-371.12.1.el5.ia64.rpm
kernel-devel-2.6.18-371.12.1.el5.ia64.rpm
kernel-headers-2.6.18-371.12.1.el5.ia64.rpm
kernel-xen-2.6.18-371.12.1.el5.ia64.rpm
kernel-xen-debuginfo-2.6.18-371.12.1.el5.ia64.rpm
kernel-xen-devel-2.6.18-371.12.1.el5.ia64.rpm

noarch:
kernel-doc-2.6.18-371.12.1.el5.noarch.rpm

ppc:
kernel-2.6.18-371.12.1.el5.ppc64.rpm
kernel-debug-2.6.18-371.12.1.el5.ppc64.rpm
kernel-debug-debuginfo-2.6.18-371.12.1.el5.ppc64.rpm
kernel-debug-devel-2.6.18-371.12.1.el5.ppc64.rpm
kernel-debuginfo-2.6.18-371.12.1.el5.ppc64.rpm
kernel-debuginfo-common-2.6.18-371.12.1.el5.ppc64.rpm
kernel-devel-2.6.18-371.12.1.el5.ppc64.rpm
kernel-headers-2.6.18-371.12.1.el5.ppc.rpm
kernel-headers-2.6.18-371.12.1.el5.ppc64.rpm
kernel-kdump-2.6.18-371.12.1.el5.ppc64.rpm
kernel-kdump-debuginfo-2.6.18-371.12.1.el5.ppc64.rpm
kernel-kdump-devel-2.6.18-371.12.1.el5.ppc64.rpm

s390x:
kernel-2.6.18-371.12.1.el5.s390x.rpm
kernel-debug-2.6.18-371.12.1.el5.s390x.rpm
kernel-debug-debuginfo-2.6.18-371.12.1.el5.s390x.rpm
kernel-debug-devel-2.6.18-371.12.1.el5.s390x.rpm
kernel-debuginfo-2.6.18-371.12.1.el5.s390x.rpm
kernel-debuginfo-common-2.6.18-371.12.1.el5.s390x.rpm
kernel-devel-2.6.18-371.12.1.el5.s390x.rpm
kernel-headers-2.6.18-371.12.1.el5.s390x.rpm
kernel-kdump-2.6.18-371.12.1.el5.s390x.rpm
kernel-kdump-debuginfo-2.6.18-371.12.1.el5.s390x.rpm
kernel-kdump-devel-2.6.18-371.12.1.el5.s390x.rpm

x86_64:
kernel-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debug-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-371.12.1.el5.x86_64.rpm
kernel-devel-2.6.18-371.12.1.el5.x86_64.rpm
kernel-headers-2.6.18-371.12.1.el5.x86_64.rpm
kernel-xen-2.6.18-371.12.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-371.12.1.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://access.redhat.com/security/cve/CVE-2014-3917
https://access.redhat.com/security/updates/classification#moderate

8. Contact:

The Red Hat security contact is .  More contact
details at https://access.redhat.com/security/team/contact

Copyright 2014 Red Hat, Inc.

Red Hat Enterprise Linux 5 RHSA-2014:1143-01 Moderate: Kernel DoS Issue

red hat
Calendar Grey September 3, 2014
Dist Redhat Esm H88
New kernel updates for Red Hat Enterprise Linux 5 address a security vulnerability and various bugs classified with a Moderate severity rating.
Updated kernel packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 5

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/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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
* An out-of-bounds memory access flaw was found in the Linux kernel's system call auditing implementation. On a system with existing audit rules defined, a local, unprivileged user could use this flaw to leak kernel memory to user space or, potentially, crash the system. (CVE-2014-3917, Moderate)
This update also fixes the following bugs:
* A bug in the journaling code (jbd and jbd2) could, under very heavy workload of fsync() operations, trigger a BUG_ON and result in a kernel oops. Also, fdatasync() could fail to immediately write out changes in the file size only. These problems have been resolved by backporting a series of patches that fixed these problems in the respective code on Red Hat Enterprise Linux 6. This update also improves performance of ext3 and ext4 file systems. (BZ#1116027)
* Due to a bug in the ext4 code, the fdatasync() system call did not force the inode size change to be written to the disk if it was the only metadata change in the file. This could result in the wrong inode size and possible data loss if the system terminated unexpectedly. The code handling inode updates has been fixed and fdatasync() now writes data to the disk as expected in this situation. (BZ#1117665)
* A workaround to a DMA read problem in the tg3 driver was incorrectly applied to the whole Broadcom 5719 and 5720 chipset family. This workaround is valid only to the A0 revision of the 5719 chips and for other revisions and chips causes occasional Tx timeouts. This update correctly applies the aforementioned workaround only to the A0 revision of the 5719 chips. (BZ#1121017)
* Due to a bug in the page writeback code, the system could become unresponsive when being under memory pressure and heavy NFS load. This update fixes the code responsible for handling of dirty pages, and dirty page write outs no longer flood the work queue. (BZ#1125246)
All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

Topics%20covered

Topics Covered

security advisory kernel update DoS issue Red Hat Enterprise Linux patches Moderate severity audit rules

References

https://access.redhat.com/security/cve/CVE-2014-3917 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source: kernel-2.6.18-371.12.1.el5.src.rpm
i386: kernel-2.6.18-371.12.1.el5.i686.rpm kernel-PAE-2.6.18-371.12.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-371.12.1.el5.i686.rpm kernel-PAE-devel-2.6.18-371.12.1.el5.i686.rpm kernel-debug-2.6.18-371.12.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-371.12.1.el5.i686.rpm kernel-debug-devel-2.6.18-371.12.1.el5.i686.rpm kernel-debuginfo-2.6.18-371.12.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-371.12.1.el5.i686.rpm kernel-devel-2.6.18-371.12.1.el5.i686.rpm kernel-headers-2.6.18-371.12.1.el5.i386.rpm kernel-xen-2.6.18-371.12.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-371.12.1.el5.i686.rpm kernel-xen-devel-2.6.18-371.12.1.el5.i686.rpm
noarch: kernel-doc-2.6.18-371.12.1.el5.noarch.rpm
x86_64: kernel-2.6.18-371.12.1.el5.x86_64.rpm kernel-debug-2.6.18-371.12.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-371.12.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-371.12.1.el5.x86_64.rpm kernel-devel-2.6.18-371.12.1.el5.x86_64.rpm kernel-headers-2.6.18-371.12.1.el5.x86_64.rpm kernel-xen-2.6.18-371.12.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-371.12.1.el5.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2014:1143-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:1143.html
Issue date: 2014-09-03

Topic

Updated kernel packages that fix one security issue and several bugs arenow available for Red Hat Enterprise Linux 5.Red Hat Product Security has rated this update as having Moderate securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory kernel update DoS issue Red Hat Enterprise Linux patches Moderate severity audit rules

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64

Bugs Fixed

1102571 - CVE-2014-3917 kernel: DoS with syscall auditing

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