[RHSA-2014:1083-01] Important: kernel-rt security and bug fix update

[news 28]

-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

 

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

Red Hat Security Advisory

 

Synopsis: Important: kernel-rt security and bug fix update

Advisory ID: RHSA-2014:1083-01

Product: Red Hat Enterprise MRG for RHEL-6

Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1083.html

Issue date: 2014-08-20

CVE Names: CVE-2014-4652 CVE-2014-4653 CVE-2014-4654

CVE-2014-4655 CVE-2014-4656 CVE-2014-5077

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

 

1. Summary:

 

Updated kernel-rt packages that fix multiple security issues and one bug

are now available for Red Hat Enterprise MRG 2.5.

 

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:

 

MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64

 

3. Description:

 

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

operating system.

 

* A NULL pointer dereference flaw was found in the way the Linux kernel's

Stream Control Transmission Protocol (SCTP) implementation handled

simultaneous connections between the same hosts. A remote attacker could

use this flaw to crash the system. (CVE-2014-5077, Important)

 

* Multiple use-after-free flaws and an integer overflow flaw were found in

the way the Linux kernel's Advanced Linux Sound Architecture (ALSA)

implementation handled user controls. A local, privileged user could use

either of these flaws to crash the system. (CVE-2014-4653, CVE-2014-4654,

CVE-2014-4655, CVE-2014-4656, Moderate)

 

* An information leak flaw was found in the way the Linux kernel's Advanced

Linux Sound Architecture (ALSA) implementation handled access of the user

control's state. A local, privileged user could use this flaw to leak

kernel memory to user space. (CVE-2014-4652, Low)

 

This update also fixes the following bug:

 

* Prior to this update, the netconsole module was unavailable on MRG

Realtime kernels due to locking issues that disabled it. These locking

issues have been corrected, allowing the netconsole module to be re-enabled

and functional on Realtime kernels. (BZ#1088923)

 

Users are advised to upgrade to these updated packages, which upgrade the

kernel-rt kernel to version kernel-rt-3.10.33-rt32.45 and 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/):

 

1113406 - CVE-2014-4652 Kernel: ALSA: control: protect user controls against races & memory disclosure

1113409 - CVE-2014-4653 Kernel: ALSA: control: do not access controls outside of protected regions

1113445 - CVE-2014-4654 CVE-2014-4655 Kernel: ALSA: control: use-after-free in replacing user controls

1113470 - CVE-2014-4656 Kernel: ALSA: control: integer overflow in id.index & id.numid

1122982 - CVE-2014-5077 Kernel: net: SCTP: fix a NULL pointer dereference during INIT collisions

 

6. Package List:

 

MRG Realtime for RHEL 6 Server v.2:

 

Source:

kernel-rt-3.10.33-rt32.45.el6rt.src.rpm

 

noarch:

kernel-rt-doc-3.10.33-rt32.45.el6rt.noarch.rpm

kernel-rt-firmware-3.10.33-rt32.45.el6rt.noarch.rpm

 

x86_64:

kernel-rt-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-debug-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-debug-debuginfo-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-debug-devel-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-debuginfo-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-debuginfo-common-x86_64-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-devel-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-trace-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-trace-debuginfo-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-trace-devel-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-vanilla-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-vanilla-debuginfo-3.10.33-rt32.45.el6rt.x86_64.rpm

kernel-rt-vanilla-devel-3.10.33-rt32.45.el6rt.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-2014-4652.html

https://www.redhat.com/security/data/cve/CVE-2014-4653.html

https://www.redhat.com/security/data/cve/CVE-2014-4654.html

https://www.redhat.com/security/data/cve/CVE-2014-4655.html

https://www.redhat.com/security/data/cve/CVE-2014-4656.html

https://www.redhat.com/security/data/cve/CVE-2014-5077.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 2014 Red Hat, Inc.

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1

 

iD8DBQFT9ISHXlSAg2UNWIIRAnhFAJ9WQ1j06qdQP4Idb69OrcSV5eZqVQCdFzSH

86VmT65bjJyMVq+O0OkZyro=

=KKrt

-----END PGP SIGNATURE-----

 

 

--