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[RHSA-2015:0285-01] Important: kernel security and bug fix update

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Red Hat Security Advisory

 

Synopsis: Important: kernel security and bug fix update

Advisory ID: RHSA-2015:0285-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0285.html

Issue date: 2015-03-03

CVE Names: CVE-2014-7841

=====================================================================

 

1. Summary:

 

Updated kernel packages that fix one security issue and three bugs are now

available for Red Hat Enterprise Linux 6.4 Extended Update Support.

 

Red Hat Product Security has rated this update as having Important 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 Compute Node Optional EUS (v. 6.4) - x86_64

Red Hat Enterprise Linux HPC Node EUS (v. 6.4) - noarch, x86_64

Red Hat Enterprise Linux Server EUS (v. 6.4) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 6.4) - i386, ppc64, s390x, x86_64

 

3. Description:

 

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

operating system.

 

* A flaw was found in the way the Linux kernel's SCTP implementation

validated INIT chunks when performing Address Configuration Change

(ASCONF). A remote attacker could use this flaw to crash the system by

sending a specially crafted SCTP packet to trigger a NULL pointer

dereference on the system. (CVE-2014-7841, Important)

 

This issue was discovered by Liu Wei of Red Hat.

 

This update also fixes the following bugs:

 

* Due to several bugs in the network console logging, a race condition

between the network console send operation and the driver's IRQ handler

could occur, or the network console could access invalid memory content.

As a consequence, the respective driver, such as vmxnet3, triggered a

BUG_ON() assertion and the system terminated unexpectedly. A patch

addressing these bugs has been applied so that driver's IRQs are disabled

before processing the send operation and the network console now accesses

the RCU-protected (read-copy update) data properly. Systems using the

network console logging no longer crashes due to the aforementioned

conditions. (BZ#1165983)

 

* A bug in the vmxnet3 driver allowed potential race conditions to be

triggered when the driver was used with the netconsole module. The race

conditions allowed the driver's internal New API (NAPI) poll routine to run

concurrently with the netpoll controller routine, which resulted in data

corruption and a subsequent kernel panic. To fix this problem, the vmxnet3

driver has been modified to call the appropriate interrupt handler to

schedule NAPI poll requests properly. (BZ#1179594)

 

* Prior to this update, nfs_mark_return_delegation() was called without any

locking, resulting in unsafe dereferencing of delegation->inode.

Because the inode is only used to discover the nfs_client, the callers now

pass a valid pointer to the nfs_server as a parameter. (BZ#1187637)

 

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.

 

For details on how to apply this update, refer to:

 

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

 

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

 

1163087 - CVE-2014-7841 kernel: net: sctp: NULL pointer dereference in af->from_addr_param on malformed packet

 

6. Package List:

 

Red Hat Enterprise Linux HPC Node EUS (v. 6.4):

 

Source:

kernel-2.6.32-358.56.1.el6.src.rpm

 

noarch:

kernel-doc-2.6.32-358.56.1.el6.noarch.rpm

kernel-firmware-2.6.32-358.56.1.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debug-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-358.56.1.el6.x86_64.rpm

kernel-devel-2.6.32-358.56.1.el6.x86_64.rpm

kernel-headers-2.6.32-358.56.1.el6.x86_64.rpm

perf-2.6.32-358.56.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.4):

 

Source:

kernel-2.6.32-358.56.1.el6.src.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-358.56.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

python-perf-2.6.32-358.56.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server EUS (v. 6.4):

 

Source:

kernel-2.6.32-358.56.1.el6.src.rpm

 

i386:

kernel-2.6.32-358.56.1.el6.i686.rpm

kernel-debug-2.6.32-358.56.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-358.56.1.el6.i686.rpm

kernel-debug-devel-2.6.32-358.56.1.el6.i686.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-358.56.1.el6.i686.rpm

kernel-devel-2.6.32-358.56.1.el6.i686.rpm

kernel-headers-2.6.32-358.56.1.el6.i686.rpm

perf-2.6.32-358.56.1.el6.i686.rpm

perf-debuginfo-2.6.32-358.56.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.i686.rpm

 

noarch:

kernel-doc-2.6.32-358.56.1.el6.noarch.rpm

kernel-firmware-2.6.32-358.56.1.el6.noarch.rpm

 

ppc64:

kernel-2.6.32-358.56.1.el6.ppc64.rpm

kernel-bootwrapper-2.6.32-358.56.1.el6.ppc64.rpm

kernel-debug-2.6.32-358.56.1.el6.ppc64.rpm

kernel-debug-debuginfo-2.6.32-358.56.1.el6.ppc64.rpm

kernel-debug-devel-2.6.32-358.56.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-358.56.1.el6.ppc64.rpm

kernel-devel-2.6.32-358.56.1.el6.ppc64.rpm

kernel-headers-2.6.32-358.56.1.el6.ppc64.rpm

perf-2.6.32-358.56.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-358.56.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.ppc64.rpm

 

s390x:

kernel-2.6.32-358.56.1.el6.s390x.rpm

kernel-debug-2.6.32-358.56.1.el6.s390x.rpm

kernel-debug-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

kernel-debug-devel-2.6.32-358.56.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-358.56.1.el6.s390x.rpm

kernel-devel-2.6.32-358.56.1.el6.s390x.rpm

kernel-headers-2.6.32-358.56.1.el6.s390x.rpm

kernel-kdump-2.6.32-358.56.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

kernel-kdump-devel-2.6.32-358.56.1.el6.s390x.rpm

perf-2.6.32-358.56.1.el6.s390x.rpm

perf-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

 

x86_64:

kernel-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debug-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-358.56.1.el6.x86_64.rpm

kernel-devel-2.6.32-358.56.1.el6.x86_64.rpm

kernel-headers-2.6.32-358.56.1.el6.x86_64.rpm

perf-2.6.32-358.56.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional EUS (v. 6.4):

 

Source:

kernel-2.6.32-358.56.1.el6.src.rpm

 

i386:

kernel-debug-debuginfo-2.6.32-358.56.1.el6.i686.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-358.56.1.el6.i686.rpm

perf-debuginfo-2.6.32-358.56.1.el6.i686.rpm

python-perf-2.6.32-358.56.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.i686.rpm

 

ppc64:

kernel-debug-debuginfo-2.6.32-358.56.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-358.56.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-358.56.1.el6.ppc64.rpm

python-perf-2.6.32-358.56.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.ppc64.rpm

 

s390x:

kernel-debug-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-358.56.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

perf-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

python-perf-2.6.32-358.56.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.s390x.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-358.56.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-358.56.1.el6.x86_64.rpm

python-perf-2.6.32-358.56.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-358.56.1.el6.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/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2014-7841

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 2015 Red Hat, Inc.

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