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Red Hat 7.1 EUS RHSA-2017:0403-01 Critical: Kernel Use-After-Free

Redhat Large Esm H500
An update for kernel is now available for Red Hat Enterprise Linux 7.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,
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====================================================================                   Red Hat Security Advisory

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2017:0403-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:0403.html
Issue date:        2017-03-02
CVE Names:         CVE-2017-6074 
====================================================================
1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.1
Extended Update Support.

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 ComputeNode EUS (v. 7.1) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.1) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.1) - ppc64, ppc64le, s390x, x86_64

3. Description:

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

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)

Red Hat would like to thank Andrey Konovalov (Google) for reporting this
issue.

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 ComputeNode EUS (v. 7.1):

Source:
kernel-3.10.0-229.49.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-229.49.1.el7.noarch.rpm
kernel-doc-3.10.0-229.49.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debug-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.49.1.el7.x86_64.rpm
kernel-devel-3.10.0-229.49.1.el7.x86_64.rpm
kernel-headers-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-229.49.1.el7.x86_64.rpm
perf-3.10.0-229.49.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1):

x86_64:
kernel-debug-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-229.49.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
python-perf-3.10.0-229.49.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.1):

Source:
kernel-3.10.0-229.49.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-229.49.1.el7.noarch.rpm
kernel-doc-3.10.0-229.49.1.el7.noarch.rpm

ppc64:
kernel-3.10.0-229.49.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-229.49.1.el7.ppc64.rpm
kernel-debug-3.10.0-229.49.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-229.49.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-229.49.1.el7.ppc64.rpm
kernel-devel-3.10.0-229.49.1.el7.ppc64.rpm
kernel-headers-3.10.0-229.49.1.el7.ppc64.rpm
kernel-tools-3.10.0-229.49.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-229.49.1.el7.ppc64.rpm
perf-3.10.0-229.49.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm

s390x:
kernel-3.10.0-229.49.1.el7.s390x.rpm
kernel-debug-3.10.0-229.49.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-229.49.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-229.49.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-229.49.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-229.49.1.el7.s390x.rpm
kernel-devel-3.10.0-229.49.1.el7.s390x.rpm
kernel-headers-3.10.0-229.49.1.el7.s390x.rpm
kernel-kdump-3.10.0-229.49.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-229.49.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-229.49.1.el7.s390x.rpm
perf-3.10.0-229.49.1.el7.s390x.rpm
perf-debuginfo-3.10.0-229.49.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-229.49.1.el7.s390x.rpm

x86_64:
kernel-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debug-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.49.1.el7.x86_64.rpm
kernel-devel-3.10.0-229.49.1.el7.x86_64.rpm
kernel-headers-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-229.49.1.el7.x86_64.rpm
perf-3.10.0-229.49.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.1):

Source:
kernel-3.10.0-229.49.1.ael7b.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-229.49.1.ael7b.noarch.rpm
kernel-doc-3.10.0-229.49.1.ael7b.noarch.rpm

ppc64le:
kernel-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-bootwrapper-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-debug-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-devel-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-headers-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-tools-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-tools-libs-3.10.0-229.49.1.ael7b.ppc64le.rpm
perf-3.10.0-229.49.1.ael7b.ppc64le.rpm
perf-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm
python-perf-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.1):

ppc64:
kernel-debug-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-229.49.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-229.49.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm
python-perf-3.10.0-229.49.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-229.49.1.el7.ppc64.rpm

s390x:
kernel-debug-debuginfo-3.10.0-229.49.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-229.49.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-229.49.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-229.49.1.el7.s390x.rpm
perf-debuginfo-3.10.0-229.49.1.el7.s390x.rpm
python-perf-3.10.0-229.49.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-229.49.1.el7.s390x.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-229.49.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
python-perf-3.10.0-229.49.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.1):

ppc64le:
kernel-debug-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-debug-devel-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-229.49.1.ael7b.ppc64le.rpm
perf-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.rpm
python-perf-3.10.0-229.49.1.ael7b.ppc64le.rpm
python-perf-debuginfo-3.10.0-229.49.1.ael7b.ppc64le.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
https://access.redhat.com/articles/2039563

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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Red Hat 7.1 EUS RHSA-2017:0403-01 Critical: Kernel Use-After-Free

red hat
Calendar Grey March 2, 2017
Dist Redhat Esm H88
A significant kernel patch for Red Hat Enterprise Linux 7.1 EUS enhances defenses against potential privilege escalation vulnerabilities.
An update for kernel is now available for Red Hat Enterprise Linux 7.1 Extended Update Support

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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
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)
Red Hat would like to thank Andrey Konovalov (Google) for reporting this issue.

References

https://access.redhat.com/security/cve/CVE-2017-6074 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/2039563

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.1):
Source: kernel-3.10.0-229.49.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-229.49.1.el7.noarch.rpm kernel-doc-3.10.0-229.49.1.el7.noarch.rpm
x86_64: kernel-3.10.0-229.49.1.el7.x86_64.rpm kernel-debug-3.10.0-229.49.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-229.49.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-229.49.1.el7.x86_64.rpm kernel-devel-3.10.0-229.49.1.el7.x86_64.rpm kernel-headers-3.10.0-229.49.1.el7.x86_64.rpm kernel-tools-3.10.0-229.49.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-229.49.1.el7.x86_64.rpm perf-3.10.0-229.49.1.el7.x86_64.rpm perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1):
x86_64: kernel-debug-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-229.49.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-229.49.1.el7.x86_64.rpm perf-debuginfo-3.10.0-229.49.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:0403-01
Product: Red Hat Enterprise Linux
Issue date: 2017-03-02

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.1Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.1) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.1) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.1) - ppc64, ppc64le, s390x, x86_64

Bugs Fixed

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

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