Jump to content
Compatible Support Forums
Sign in to follow this  
Followers 0
news

[RHSA-2016:0494-01] Moderate: kernel security, bug fix, and enhancement update

By news, in Upcoming News

Recommended Posts

news    28

news
Posted

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

Hash: SHA1

 

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

Red Hat Security Advisory

 

Synopsis: Moderate: kernel security, bug fix, and enhancement update

Advisory ID: RHSA-2016:0494-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0494.html

Issue date: 2016-03-22

CVE Names: CVE-2016-0774

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

 

1. Summary:

 

Updated kernel packages that fix one security issue, several bugs, and add

one enhancement are now available for Red Hat Enterprise Linux 6.

 

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 Desktop (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

 

3. Description:

 

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

operating system.

 

* It was found that the fix for CVE-2015-1805 incorrectly kept buffer

offset and buffer length in sync on a failed atomic read, potentially

resulting in a pipe buffer state corruption. A local, unprivileged user

could use this flaw to crash the system or leak kernel memory to user

space. (CVE-2016-0774, Moderate)

 

The security impact of this issue was discovered by Red Hat.

 

This update also fixes the following bugs:

 

* In the anon_vma structure, the degree counts number of child anon_vmas

and of VMAs which points to this anon_vma. Failure to decrement the

parent's degree in the unlink_anon_vma() function, when its list was empty,

previously triggered a BUG_ON() assertion. The provided patch makes sure

the anon_vma degree is always decremented when the VMA list is empty, thus

fixing this bug. (BZ#1318364)

 

* When running Internet Protocol Security (IPSEC) on external storage

encrypted with LUKS under a substantial load on the system, data

corruptions could previously occur. A set of upstream patches has been

provided, and data corruption is no longer reported in this situation.

(BZ#1298994)

 

* Due to prematurely decremented calc_load_task, the calculated load

average was off by up to the number of CPUs in the machine. As a

consequence, job scheduling worked improperly causing a drop in the system

performance. This update keeps the delta of the CPU going into NO_HZ idle

separately, and folds the pending idle delta into the global active count

while correctly aging the averages for the idle-duration when leaving NO_HZ

mode. Now, job scheduling works correctly, ensuring balanced CPU load.

(BZ#1300349)

 

* Due to a regression in the Red Hat Enterprise Linux 6.7 kernel, the

cgroup OOM notifier accessed a cgroup-specific internal data structure

without a proper locking protection, which led to a kernel panic. This

update adjusts the cgroup OOM notifier to lock internal data properly,

thus fixing the bug. (BZ#1302763)

 

* GFS2 had a rare timing window that sometimes caused it to reference an

uninitialized variable. Consequently, a kernel panic occurred. The code has

been changed to reference the correct value during this timing window, and

the kernel no longer panics. (BZ#1304332)

 

* Due to a race condition whereby a cache operation could be submitted

after a cache object was killed, the kernel occasionally crashed on systems

running the cachefilesd service. The provided patch prevents the race

condition by adding serialization in the code that makes the object

unavailable. As a result, all subsequent operations targetted on the object

are rejected and the kernel no longer crashes in this scenario.

(BZ#1308471)

 

This update also adds this enhancement:

 

* The lpfc driver has been updated to version 11.0.0.4. (BZ#1297838)

 

All kernel users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues and add this

enhancement. 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/):

 

1303961 - CVE-2016-0774 kernel: pipe buffer state corruption after unsuccessful atomic read from pipe

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

kernel-2.6.32-573.22.1.el6.src.rpm

 

i386:

kernel-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

kernel-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-headers-2.6.32-573.22.1.el6.i686.rpm

perf-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-573.22.1.el6.noarch.rpm

kernel-doc-2.6.32-573.22.1.el6.noarch.rpm

kernel-firmware-2.6.32-573.22.1.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.22.1.el6.x86_64.rpm

kernel-devel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-headers-2.6.32-573.22.1.el6.x86_64.rpm

perf-2.6.32-573.22.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.22.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

kernel-2.6.32-573.22.1.el6.src.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-573.22.1.el6.noarch.rpm

kernel-doc-2.6.32-573.22.1.el6.noarch.rpm

kernel-firmware-2.6.32-573.22.1.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.22.1.el6.x86_64.rpm

kernel-devel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-headers-2.6.32-573.22.1.el6.x86_64.rpm

perf-2.6.32-573.22.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

x86_64:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.22.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

kernel-2.6.32-573.22.1.el6.src.rpm

 

i386:

kernel-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

kernel-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-headers-2.6.32-573.22.1.el6.i686.rpm

perf-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-573.22.1.el6.noarch.rpm

kernel-doc-2.6.32-573.22.1.el6.noarch.rpm

kernel-firmware-2.6.32-573.22.1.el6.noarch.rpm

 

ppc64:

kernel-2.6.32-573.22.1.el6.ppc64.rpm

kernel-bootwrapper-2.6.32-573.22.1.el6.ppc64.rpm

kernel-debug-2.6.32-573.22.1.el6.ppc64.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.ppc64.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-573.22.1.el6.ppc64.rpm

kernel-devel-2.6.32-573.22.1.el6.ppc64.rpm

kernel-headers-2.6.32-573.22.1.el6.ppc64.rpm

perf-2.6.32-573.22.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.ppc64.rpm

 

s390x:

kernel-2.6.32-573.22.1.el6.s390x.rpm

kernel-debug-2.6.32-573.22.1.el6.s390x.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-573.22.1.el6.s390x.rpm

kernel-devel-2.6.32-573.22.1.el6.s390x.rpm

kernel-headers-2.6.32-573.22.1.el6.s390x.rpm

kernel-kdump-2.6.32-573.22.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

kernel-kdump-devel-2.6.32-573.22.1.el6.s390x.rpm

perf-2.6.32-573.22.1.el6.s390x.rpm

perf-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

 

x86_64:

kernel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.22.1.el6.x86_64.rpm

kernel-devel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-headers-2.6.32-573.22.1.el6.x86_64.rpm

perf-2.6.32-573.22.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

 

ppc64:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-573.22.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.ppc64.rpm

python-perf-2.6.32-573.22.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.ppc64.rpm

 

s390x:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-573.22.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

perf-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

python-perf-2.6.32-573.22.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.s390x.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.22.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

kernel-2.6.32-573.22.1.el6.src.rpm

 

i386:

kernel-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

kernel-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-headers-2.6.32-573.22.1.el6.i686.rpm

perf-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-573.22.1.el6.noarch.rpm

kernel-doc-2.6.32-573.22.1.el6.noarch.rpm

kernel-firmware-2.6.32-573.22.1.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.22.1.el6.x86_64.rpm

kernel-devel-2.6.32-573.22.1.el6.x86_64.rpm

kernel-headers-2.6.32-573.22.1.el6.x86_64.rpm

perf-2.6.32-573.22.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-573.22.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

python-perf-2.6.32-573.22.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.22.1.el6.i686.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.22.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-2.6.32-573.22.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.22.1.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-2016-0774

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 2016 Red Hat, Inc.

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

Version: GnuPG v1

 

iD8DBQFW8b8SXlSAg2UNWIIRAq8OAJ0Y4bFtarqu+9HC3rYZ+K2DILDbFACeMkEC

yBJF6H2aOZ3X0GCBq+vPDNY=

=5fPn

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

 

 

--

 

Share this post

Link to post

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
Sign in to follow this  
Followers 0
Go To Topic Listing Upcoming News
×