[RHSA-2016:0065-01] Important: kernel-rt security update

[news 28]

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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://rhn.redhat.com/errata/RHSA-2016-0065.html

Issue date: 2016-01-25

CVE Names: CVE-2016-0728

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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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