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All Products
Red Hat Product Errata RHSA-2014:0800 - Security Advisory
Issued:
2014-06-26
Updated:
2014-06-26

RHSA-2014:0800 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

Updated kernel packages that fix three security issues are now available
for Red Hat Enterprise Linux 6.2 Extended Update Support.

The Red Hat Security Response Team 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.

  • A flaw was found in the way the Linux kernel's futex subsystem handled

the requeuing of certain Priority Inheritance (PI) futexes. A local,
unprivileged user could use this flaw to escalate their privileges on the
system. (CVE-2014-3153, Important)

  • A flaw was found in the way the Linux kernel's floppy driver handled user

space provided data in certain error code paths while processing FDRAWCMD
IOCTL commands. A local user with write access to /dev/fdX could use this
flaw to free (using the kfree() function) arbitrary kernel memory.
(CVE-2014-1737, Important)

  • It was found that the Linux kernel's floppy driver leaked internal kernel

memory addresses to user space during the processing of the FDRAWCMD IOCTL
command. A local user with write access to /dev/fdX could use this flaw to
obtain information about the kernel heap arrangement. (CVE-2014-1738, Low)

Note: A local user with write access to /dev/fdX could use these two flaws
(CVE-2014-1737 in combination with CVE-2014-1738) to escalate their
privileges on the system.

Red Hat would like to thank Kees Cook of Google for reporting
CVE-2014-3153, and Matthew Daley for reporting CVE-2014-1737 and
CVE-2014-1738. Google acknowledges Pinkie Pie as the original reporter of
CVE-2014-3153.

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.

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/site/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.

Affected Products

  • Red Hat Enterprise Linux Server - AUS 6.2 x86_64

Fixes

  • BZ - 1094299 - CVE-2014-1737 CVE-2014-1738 kernel: block: floppy: privilege escalation via FDRAWCMD floppy ioctl command
  • BZ - 1103626 - CVE-2014-3153 kernel: futex: pi futexes requeue issue

CVEs

  • CVE-2014-1737
  • CVE-2014-1738
  • CVE-2014-3153

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server - AUS 6.2

SRPM
kernel-2.6.32-220.52.1.el6.src.rpm SHA-256: ab7187076f1d04d3e825e880768fd06d791b6b2c4eb5d83d74467d027b64341c
x86_64
kernel-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 8eca379c32c24393042c73c8f8213817e1ed0cacf5acdbc49781acf3085ca065
kernel-debug-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 7e60eb87c5eb91055af6f735bcfbfbe73c3ada76a3ef799a7b71d397ed64a3eb
kernel-debug-debuginfo-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 03114e7f38f6ab8986e69d7053f9517b234247f39fe027c213aafb2936ea7f97
kernel-debug-debuginfo-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 03114e7f38f6ab8986e69d7053f9517b234247f39fe027c213aafb2936ea7f97
kernel-debug-devel-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 623626ddac00b550123f10aba3b35d50367a24b708b9a106442867a6539c562f
kernel-debuginfo-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: ba793e6122e141dd50833a9620015b3da514dc08a8fe128913be1c4504f3fa5e
kernel-debuginfo-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: ba793e6122e141dd50833a9620015b3da514dc08a8fe128913be1c4504f3fa5e
kernel-debuginfo-common-x86_64-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: ff9dd319ceae6506efd1fe44d8c7aef5c605de30b2efe9f66c3970a200bb3ae9
kernel-debuginfo-common-x86_64-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: ff9dd319ceae6506efd1fe44d8c7aef5c605de30b2efe9f66c3970a200bb3ae9
kernel-devel-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 733d3573e71e7dbfdc15d32aed1e0e1d1fdd4d1d00499c5b61c04a3c003e6cd6
kernel-doc-2.6.32-220.52.1.el6.noarch.rpm SHA-256: 8549aa4dd828fc630ea0cb1db1d00bdd2715c155ff5ec15f61bc7511094e7142
kernel-firmware-2.6.32-220.52.1.el6.noarch.rpm SHA-256: 327a5598a1412f9f5d2264913b1340bf5a0d5bea8b2c2a5aea82121ebd40c935
kernel-headers-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 3f6def277d43fd2622c5194a4172f9ec9fb5e75c1a7325c9c323d6adaa59afaa
perf-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 72343fc8b1144a5147a040a3525e3d898e4e821a539e6d8bd300554d16bbfa86
perf-debuginfo-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: b45c2fa61d200647cbb97d1f380465605617d7b86afc918f1471caf1aa926466
perf-debuginfo-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: b45c2fa61d200647cbb97d1f380465605617d7b86afc918f1471caf1aa926466
python-perf-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 32df70c44d22cfa9e43dfed71e5cce81bdf753f97d31ac072cd7394bad1cb30d
python-perf-debuginfo-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 216237b49f9b77205dbcd80c09de846ea73b3675bcd9892031bdc27918ecc67e
python-perf-debuginfo-2.6.32-220.52.1.el6.x86_64.rpm SHA-256: 216237b49f9b77205dbcd80c09de846ea73b3675bcd9892031bdc27918ecc67e

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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