[RHSA-2017:0295-01] Important: kernel-rt security update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: kernel-rt security update

Advisory ID: RHSA-2017:0295-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0295.html

Issue date: 2017-02-22

CVE Names: CVE-2017-6074

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1. Summary:

 

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

 

Red Hat Product Security has rated this update as having a security impact

of Important. 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 Realtime (v. 7) - noarch, x86_64

Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64

 

3. Description:

 

The kernel-rt packages provide the Real Time Linux Kernel, which enables

fine-tuning for systems with extremely high determinism requirements.

 

Security Fix(es):

 

* A use-after-free flaw was found in the way the Linux kernel's Datagram

Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer)

resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is

set on the socket. A local, unprivileged user could use this flaw to alter

the kernel memory, allowing them to escalate their privileges on the

system. (CVE-2017-6074, Important)

 

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/):

 

1423071 - CVE-2017-6074 kernel: use after free in dccp protocol

 

6. Package List:

 

Red Hat Enterprise Linux for Real Time for NFV (v. 7):

 

Source:

kernel-rt-3.10.0-514.6.1.rt56.430.el7.src.rpm

 

noarch:

kernel-rt-doc-3.10.0-514.6.1.rt56.430.el7.noarch.rpm

 

x86_64:

kernel-rt-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-devel-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-kvm-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-kvm-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debuginfo-common-x86_64-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-devel-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-kvm-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-kvm-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-devel-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-kvm-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-kvm-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

 

Red Hat Enterprise Linux Realtime (v. 7):

 

Source:

kernel-rt-3.10.0-514.6.1.rt56.430.el7.src.rpm

 

noarch:

kernel-rt-doc-3.10.0-514.6.1.rt56.430.el7.noarch.rpm

 

x86_64:

kernel-rt-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-devel-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debug-kvm-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-debuginfo-common-x86_64-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-devel-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-kvm-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-debuginfo-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-devel-3.10.0-514.6.1.rt56.430.el7.x86_64.rpm

kernel-rt-trace-kvm-debuginfo-3.10.0-514.6.1.rt56.430.el7.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-2017-6074

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 2017 Red Hat, Inc.

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