ESB-2018.3864 - [RedHat] kernel: Execute arbitrary code/commands - Remote/unauthenticated 2018-12-13

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3864
         kernel security and bug fix update for RHEL 5.9 Long Life
                             13 December 2018

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

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kernel
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 5
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-15265  

Reference:         ESB-2017.2700
                   ESB-2017.2751

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2018:3823

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

Synopsis:          Moderate: kernel security and bug fix update
Advisory ID:       RHSA-2018:3823-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:3823
Issue date:        2018-12-12
CVE Names:         CVE-2017-15265 
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 5.9 Long
Life.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Long Life (v. 5.9 server) - i386, noarch, x86_64

3. Description:

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

Security Fix(es):

* kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

Bug Fix(es):

* Previously, on certain Intel 64 systems, the microcode contained a new
model-specific register (MSR) that was not present in the older microcode
running on CPUs that had not been updated yet. As a consequence, the system
crashed due to a general protection fault on a CPU running the older
microcode. This update fixes the bug by having the kernel use MSR access
routines that handle the general protection fault. As a result, the system
no longer crashes in the described scenario. (BZ#1652467)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1501878 - CVE-2017-15265 kernel: Use-after-free in snd_seq_ioctl_create_port()

6. Package List:

Red Hat Enterprise Linux Long Life (v. 5.9 server):

Source:
kernel-2.6.18-348.42.1.el5.src.rpm

i386:
kernel-2.6.18-348.42.1.el5.i686.rpm
kernel-PAE-2.6.18-348.42.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-348.42.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-348.42.1.el5.i686.rpm
kernel-debug-2.6.18-348.42.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-348.42.1.el5.i686.rpm
kernel-debug-devel-2.6.18-348.42.1.el5.i686.rpm
kernel-debuginfo-2.6.18-348.42.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-348.42.1.el5.i686.rpm
kernel-devel-2.6.18-348.42.1.el5.i686.rpm
kernel-headers-2.6.18-348.42.1.el5.i386.rpm
kernel-xen-2.6.18-348.42.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-348.42.1.el5.i686.rpm
kernel-xen-devel-2.6.18-348.42.1.el5.i686.rpm

noarch:
kernel-doc-2.6.18-348.42.1.el5.noarch.rpm

x86_64:
kernel-2.6.18-348.42.1.el5.x86_64.rpm
kernel-debug-2.6.18-348.42.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-348.42.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-348.42.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-348.42.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-348.42.1.el5.x86_64.rpm
kernel-devel-2.6.18-348.42.1.el5.x86_64.rpm
kernel-headers-2.6.18-348.42.1.el5.x86_64.rpm
kernel-xen-2.6.18-348.42.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-348.42.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-348.42.1.el5.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-2017-15265
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2018 Red Hat, Inc.
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