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Red Hat Security Advisory 2017-1487-01

Red Hat Security Advisory 2017-1487-01
Posted Jun 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1487-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is a kernel-side mitigation which increases the stack guard gap size from one page to 1 MiB to make successful exploitation of this issue more difficult.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-1000364
SHA-256 | 56083218781579a6ba345baf8bd1ee832989805f1f187e23cf765dd8a47d68bc

Red Hat Security Advisory 2017-1487-01

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

Synopsis: Important: kernel security update
Advisory ID: RHSA-2017:1487-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1487
Issue date: 2017-06-19
CVE Names: CVE-2017-1000364
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 6.7
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 HPC Node EUS (v. 6.7) - noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) - x86_64
Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.7) - i386, ppc64, s390x, x86_64

3. Description:

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

Security Fix(es):

* A flaw was found in the way memory was being allocated on the stack for
user space binaries. If heap (or different memory region) and stack memory
regions were adjacent to each other, an attacker could use this flaw to
jump over the stack guard gap, cause controlled memory corruption on
process stack or the adjacent memory region, and thus increase their
privileges on the system. This is a kernel-side mitigation which increases
the stack guard gap size from one page to 1 MiB to make successful
exploitation of this issue more difficult. (CVE-2017-1000364, Important)

Red Hat would like to thank Qualys Research Labs 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/):

1461333 - CVE-2017-1000364 kernel: heap/stack gap jumping via unbounded stack allocations

6. Package List:

Red Hat Enterprise Linux HPC Node EUS (v. 6.7):

Source:
kernel-2.6.32-573.42.2.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-573.42.2.el6.noarch.rpm
kernel-doc-2.6.32-573.42.2.el6.noarch.rpm
kernel-firmware-2.6.32-573.42.2.el6.noarch.rpm

x86_64:
kernel-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debug-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-573.42.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-573.42.2.el6.i686.rpm
kernel-debug-devel-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.i686.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-573.42.2.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.42.2.el6.x86_64.rpm
kernel-devel-2.6.32-573.42.2.el6.x86_64.rpm
kernel-headers-2.6.32-573.42.2.el6.x86_64.rpm
perf-2.6.32-573.42.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.42.2.el6.i686.rpm
perf-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7):

x86_64:
kernel-debug-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.42.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
python-perf-2.6.32-573.42.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 6.7):

Source:
kernel-2.6.32-573.42.2.el6.src.rpm

i386:
kernel-2.6.32-573.42.2.el6.i686.rpm
kernel-debug-2.6.32-573.42.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.42.2.el6.i686.rpm
kernel-debug-devel-2.6.32-573.42.2.el6.i686.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-573.42.2.el6.i686.rpm
kernel-devel-2.6.32-573.42.2.el6.i686.rpm
kernel-headers-2.6.32-573.42.2.el6.i686.rpm
perf-2.6.32-573.42.2.el6.i686.rpm
perf-debuginfo-2.6.32-573.42.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.i686.rpm

noarch:
kernel-abi-whitelists-2.6.32-573.42.2.el6.noarch.rpm
kernel-doc-2.6.32-573.42.2.el6.noarch.rpm
kernel-firmware-2.6.32-573.42.2.el6.noarch.rpm

ppc64:
kernel-2.6.32-573.42.2.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-573.42.2.el6.ppc64.rpm
kernel-debug-2.6.32-573.42.2.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-573.42.2.el6.ppc64.rpm
kernel-debug-devel-2.6.32-573.42.2.el6.ppc64.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-573.42.2.el6.ppc64.rpm
kernel-devel-2.6.32-573.42.2.el6.ppc64.rpm
kernel-headers-2.6.32-573.42.2.el6.ppc64.rpm
perf-2.6.32-573.42.2.el6.ppc64.rpm
perf-debuginfo-2.6.32-573.42.2.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.ppc64.rpm

s390x:
kernel-2.6.32-573.42.2.el6.s390x.rpm
kernel-debug-2.6.32-573.42.2.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-573.42.2.el6.s390x.rpm
kernel-debug-devel-2.6.32-573.42.2.el6.s390x.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-573.42.2.el6.s390x.rpm
kernel-devel-2.6.32-573.42.2.el6.s390x.rpm
kernel-headers-2.6.32-573.42.2.el6.s390x.rpm
kernel-kdump-2.6.32-573.42.2.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-573.42.2.el6.s390x.rpm
kernel-kdump-devel-2.6.32-573.42.2.el6.s390x.rpm
perf-2.6.32-573.42.2.el6.s390x.rpm
perf-debuginfo-2.6.32-573.42.2.el6.s390x.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.s390x.rpm

x86_64:
kernel-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debug-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-573.42.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-573.42.2.el6.i686.rpm
kernel-debug-devel-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.i686.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-573.42.2.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.42.2.el6.x86_64.rpm
kernel-devel-2.6.32-573.42.2.el6.x86_64.rpm
kernel-headers-2.6.32-573.42.2.el6.x86_64.rpm
perf-2.6.32-573.42.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.42.2.el6.i686.rpm
perf-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 6.7):

i386:
kernel-debug-debuginfo-2.6.32-573.42.2.el6.i686.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-573.42.2.el6.i686.rpm
perf-debuginfo-2.6.32-573.42.2.el6.i686.rpm
python-perf-2.6.32-573.42.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.i686.rpm

ppc64:
kernel-debug-debuginfo-2.6.32-573.42.2.el6.ppc64.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-573.42.2.el6.ppc64.rpm
perf-debuginfo-2.6.32-573.42.2.el6.ppc64.rpm
python-perf-2.6.32-573.42.2.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.ppc64.rpm

s390x:
kernel-debug-debuginfo-2.6.32-573.42.2.el6.s390x.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-573.42.2.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-573.42.2.el6.s390x.rpm
perf-debuginfo-2.6.32-573.42.2.el6.s390x.rpm
python-perf-2.6.32-573.42.2.el6.s390x.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.s390x.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.42.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.42.2.el6.x86_64.rpm
python-perf-2.6.32-573.42.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.42.2.el6.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-2017-1000364
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/stackguard

8. Contact:

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

Copyright 2017 Red Hat, Inc.
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