[RHSA-2015:0783-01] 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-2015:0783-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0783.html

Issue date: 2015-04-07

CVE Names: CVE-2014-8159 CVE-2014-8867

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

 

1. Summary:

 

Updated kernel packages that fix two security issues and two bugs are now

available for Red Hat Enterprise Linux 5.

 

Red Hat Product Security 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 (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.

 

* It was found that the Linux kernel's Infiniband subsystem did not

properly sanitize input parameters while registering memory regions from

user space via the (u)verbs API. A local user with access to a

/dev/infiniband/uverbsX device could use this flaw to crash the system or,

potentially, escalate their privileges on the system. (CVE-2014-8159,

Important)

 

* An insufficient bound checking flaw was found in the Xen hypervisor's

implementation of acceleration support for the "REP MOVS" instructions.

A privileged HVM guest user could potentially use this flaw to crash the

host. (CVE-2014-8867, Important)

 

Red Hat would like to thank Mellanox for reporting CVE-2014-8159, and the

Xen project for reporting CVE-2014-8867.

 

This update also fixes the following bugs:

 

* Under memory pressure, cached data was previously flushed to the backing

server using the PID of the thread responsible for flushing the data in the

Server Message Block (SMB) headers instead of the PID of the thread which

actually wrote the data. As a consequence, when a file was locked by the

writing thread prior to writing, the server considered writes by the thread

flushing the pagecache as being a separate process from writing to a locked

file, and thus rejected the writes. In addition, the data to be written was

discarded. This update ensures that the correct PID is sent to the server,

and data corruption is avoided when data is being written from a client

under memory pressure. (BZ#1169304)

 

* This update adds support for new cryptographic hardware in toleration

mode for IBM System z. (BZ#1182522)

 

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/):

 

1164255 - CVE-2014-8867 xen: Insufficient bounding of "REP MOVS" to MMIO emulated inside the hypervisor (xsa112)

1181166 - CVE-2014-8159 kernel: infiniband: uverbs: unprotected physical memory access

 

6. Package List:

 

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

 

Source:

kernel-2.6.18-404.el5.src.rpm

 

i386:

kernel-2.6.18-404.el5.i686.rpm

kernel-PAE-2.6.18-404.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-404.el5.i686.rpm

kernel-PAE-devel-2.6.18-404.el5.i686.rpm

kernel-debug-2.6.18-404.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-404.el5.i686.rpm

kernel-debug-devel-2.6.18-404.el5.i686.rpm

kernel-debuginfo-2.6.18-404.el5.i686.rpm

kernel-debuginfo-common-2.6.18-404.el5.i686.rpm

kernel-devel-2.6.18-404.el5.i686.rpm

kernel-headers-2.6.18-404.el5.i386.rpm

kernel-xen-2.6.18-404.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-404.el5.i686.rpm

kernel-xen-devel-2.6.18-404.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-404.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-404.el5.x86_64.rpm

kernel-debug-2.6.18-404.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-404.el5.x86_64.rpm

kernel-debug-devel-2.6.18-404.el5.x86_64.rpm

kernel-debuginfo-2.6.18-404.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-404.el5.x86_64.rpm

kernel-devel-2.6.18-404.el5.x86_64.rpm

kernel-headers-2.6.18-404.el5.x86_64.rpm

kernel-xen-2.6.18-404.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-404.el5.x86_64.rpm

kernel-xen-devel-2.6.18-404.el5.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

kernel-2.6.18-404.el5.src.rpm

 

i386:

kernel-2.6.18-404.el5.i686.rpm

kernel-PAE-2.6.18-404.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-404.el5.i686.rpm

kernel-PAE-devel-2.6.18-404.el5.i686.rpm

kernel-debug-2.6.18-404.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-404.el5.i686.rpm

kernel-debug-devel-2.6.18-404.el5.i686.rpm

kernel-debuginfo-2.6.18-404.el5.i686.rpm

kernel-debuginfo-common-2.6.18-404.el5.i686.rpm

kernel-devel-2.6.18-404.el5.i686.rpm

kernel-headers-2.6.18-404.el5.i386.rpm

kernel-xen-2.6.18-404.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-404.el5.i686.rpm

kernel-xen-devel-2.6.18-404.el5.i686.rpm

 

ia64:

kernel-2.6.18-404.el5.ia64.rpm

kernel-debug-2.6.18-404.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-404.el5.ia64.rpm

kernel-debug-devel-2.6.18-404.el5.ia64.rpm

kernel-debuginfo-2.6.18-404.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-404.el5.ia64.rpm

kernel-devel-2.6.18-404.el5.ia64.rpm

kernel-headers-2.6.18-404.el5.ia64.rpm

kernel-xen-2.6.18-404.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-404.el5.ia64.rpm

kernel-xen-devel-2.6.18-404.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-404.el5.noarch.rpm

 

ppc:

kernel-2.6.18-404.el5.ppc64.rpm

kernel-debug-2.6.18-404.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-404.el5.ppc64.rpm

kernel-debug-devel-2.6.18-404.el5.ppc64.rpm

kernel-debuginfo-2.6.18-404.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-404.el5.ppc64.rpm

kernel-devel-2.6.18-404.el5.ppc64.rpm

kernel-headers-2.6.18-404.el5.ppc.rpm

kernel-headers-2.6.18-404.el5.ppc64.rpm

kernel-kdump-2.6.18-404.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-404.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-404.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-404.el5.s390x.rpm

kernel-debug-2.6.18-404.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-404.el5.s390x.rpm

kernel-debug-devel-2.6.18-404.el5.s390x.rpm

kernel-debuginfo-2.6.18-404.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-404.el5.s390x.rpm

kernel-devel-2.6.18-404.el5.s390x.rpm

kernel-headers-2.6.18-404.el5.s390x.rpm

kernel-kdump-2.6.18-404.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-404.el5.s390x.rpm

kernel-kdump-devel-2.6.18-404.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-404.el5.x86_64.rpm

kernel-debug-2.6.18-404.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-404.el5.x86_64.rpm

kernel-debug-devel-2.6.18-404.el5.x86_64.rpm

kernel-debuginfo-2.6.18-404.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-404.el5.x86_64.rpm

kernel-devel-2.6.18-404.el5.x86_64.rpm

kernel-headers-2.6.18-404.el5.x86_64.rpm

kernel-xen-2.6.18-404.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-404.el5.x86_64.rpm

kernel-xen-devel-2.6.18-404.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/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2014-8159

https://access.redhat.com/security/cve/CVE-2014-8867

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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