Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory: Important

Topic

Updated kernel packages that fix multiple security issues and two bugs are
now available for Red Hat Enterprise Linux 6.4 Advanced Update Support.

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.

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 integer overflow flaw was found in the way the Linux kernel's Frame
  Buffer device implementation mapped kernel memory to user space via the
  mmap syscall. A local user able to access a frame buffer device file
  (/dev/fb*) could possibly use this flaw to escalate their privileges on the
  system. (CVE-2013-2596, Important)
  
• It was found that the parse_rock_ridge_inode_internal() function of the
  Linux kernel's ISOFS implementation did not correctly check relocated
  directories when processing Rock Ridge child link (CL) tags. An attacker
  with physical access to the system could use a specially crafted ISO image
  to crash the system or, potentially, escalate their privileges on the
  system. (CVE-2014-5471, CVE-2014-5472, Low)
  

Red Hat would like to thank Mellanox for reporting the CVE-2014-8159 issue.

This update also fixes the following bugs:

• The kernel could sometimes panic due to a possible division by zero in
  the kernel scheduler. This bug has been fixed by defining a new div64_ul()
  division function and correcting the affected calculation in the
  proc_sched_show_task() function. (BZ#1199898)
  
• When repeating a Coordinated Universal Time (UTC) value during a leap
  second (when the UTC time should be 23:59:60), the International Atomic
  Time (TAI) timescale previously stopped as the kernel NTP code incremented
  the TAI offset one second too late. A patch has been provided, which fixes
  the bug by incrementing the offset during the leap second itself. Now, the
  correct TAI is set during the leap second. (BZ#1201672)
  

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.

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

Affected Products

• Red Hat Enterprise Linux Server - AUS 6.4 x86_64

Fixes

• BZ - 1034490 - CVE-2013-2596 kernel: integer overflow in fb_mmap
• BZ - 1134099 - CVE-2014-5471 CVE-2014-5472 kernel: isofs: unbound recursion when processing relocated directories
• BZ - 1181166 - CVE-2014-8159 kernel: infiniband: uverbs: unprotected physical memory access

CVEs

• CVE-2014-5472
• CVE-2014-5471
• CVE-2013-2596
• CVE-2014-8159

References

• https://access.redhat.com/security/updates/classification/#important

Red Hat Enterprise Linux Server - AUS 6.4

SRPM
kernel-2.6.32-358.59.1.el6.src.rpm	SHA-256: 8d17c7cd16647ac3f82d70e8817a8b4f6c7514b18cc7263e89d0067b074e2813
x86_64
kernel-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 8427f101c32d71d167c5de39eedc6a4d0f02f9bc47a0d525e93e07fb0692cf42
kernel-debug-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: e5d25100e9d84b69aaf9836278368e49f46c466a58bbbd91d02975423d446bc0
kernel-debug-debuginfo-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 66cc1103ae46a5d9c8125829e36048639f737aa7d6fd35214bb25151cb140962
kernel-debug-debuginfo-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 66cc1103ae46a5d9c8125829e36048639f737aa7d6fd35214bb25151cb140962
kernel-debug-devel-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 8bee1f5460068f83b428698b865a20f681cc647559115412bdb2b7c526b4a615
kernel-debuginfo-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: e41b003790ef009daeee5422f1fa526e6898878cb2222847d5dadd1b9461b521
kernel-debuginfo-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: e41b003790ef009daeee5422f1fa526e6898878cb2222847d5dadd1b9461b521
kernel-debuginfo-common-x86_64-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: a3e917bb14ee6640a330904d27608dee8df43a13f3787e69dfd97579dcf756d1
kernel-debuginfo-common-x86_64-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: a3e917bb14ee6640a330904d27608dee8df43a13f3787e69dfd97579dcf756d1
kernel-devel-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 1e179389c25a3e8dd6e83255286d126b5834af8aa27a652fd6a9173cb480368d
kernel-doc-2.6.32-358.59.1.el6.noarch.rpm	SHA-256: 20f78f56beb63bd80aa44bea5576f1565c0649df1cdf0932c21243fc8fa36656
kernel-firmware-2.6.32-358.59.1.el6.noarch.rpm	SHA-256: 3f65a15735eda9a5f66651b01999ac45bdd75c78b8be152bc286b5d7c8ff164a
kernel-headers-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 34311f1a88e006618978299dd73e228d58ffcb02df59ba76462bbaccee25f7e7
perf-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 5c4c4782edeeb75e1c519dd3c05c8502d730f03fa1ae223d3691d3e3196d4f47
perf-debuginfo-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 8062e5f89c845232acd9c6bae888426e1b0202d00061996124a3e816c62b94e7
perf-debuginfo-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 8062e5f89c845232acd9c6bae888426e1b0202d00061996124a3e816c62b94e7
python-perf-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 8980bac5741db1f3aa79e12ff34b904c412bc078c56b59983d6f82aca153bb31
python-perf-debuginfo-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 5cc2afb7a5c4a8eb1c26bacce69f48d6688bc25aebb525852d32416539bcce62
python-perf-debuginfo-2.6.32-358.59.1.el6.x86_64.rpm	SHA-256: 5cc2afb7a5c4a8eb1c26bacce69f48d6688bc25aebb525852d32416539bcce62