Updated kernel-rt packages that fix one security issue are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which

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====================================================================                   Red Hat Security Advisory

Synopsis:          Important: kernel-rt security update
Advisory ID:       RHSA-2016:0065-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2016:0065.html
Issue date:        2016-01-25
CVE Names:         CVE-2016-0728 
====================================================================
1. Summary:

Updated kernel-rt packages that fix one security issue are now available
for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Important 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 Realtime (v. 7) - noarch, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

* A use-after-free flaw was found in the way the Linux kernel's key
management subsystem handled keyring object reference counting in certain
error path of the join_session_keyring() function. A local, unprivileged
user could use this flaw to escalate their privileges on the system.
(CVE-2016-0728, Important)

Red Hat would like to thank the Perception Point research team for
reporting this issue.

All kernel-rt users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. 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/):

1297475 - CVE-2016-0728 kernel: Possible use-after-free vulnerability in keyring facility

6. Package List:

Red Hat Enterprise Linux Realtime (v. 7):

Source:
kernel-rt-3.10.0-327.4.5.rt56.206.el7_2.src.rpm

noarch:
kernel-rt-doc-3.10.0-327.4.5.rt56.206.el7_2.noarch.rpm

x86_64:
kernel-rt-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-debug-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-debug-devel-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-debuginfo-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-devel-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-trace-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
kernel-rt-trace-devel-3.10.0-327.4.5.rt56.206.el7_2.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-2016-0728
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 2016 Red Hat, Inc.
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