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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2017.1541
Important: kernel security update
21 June 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-1000364
Reference: ESB-2017.1537
ESB-2017.1526
ESB-2017.1521
Original Bulletin:
https://access.redhat.com/errata/RHSA-2017:1484
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security update
Advisory ID: RHSA-2017:1484-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1484
Issue date: 2017-06-19
CVE Names: CVE-2017-1000364
=====================================================================
1. Summary:
An update for kernel 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 Client (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 Client (v. 7):
Source:
kernel-3.10.0-514.21.2.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-514.21.2.el7.noarch.rpm
kernel-doc-3.10.0-514.21.2.el7.noarch.rpm
x86_64:
kernel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.21.2.el7.x86_64.rpm
kernel-devel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-headers-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.21.2.el7.x86_64.rpm
perf-3.10.0-514.21.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
kernel-debug-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.21.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
kernel-3.10.0-514.21.2.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-514.21.2.el7.noarch.rpm
kernel-doc-3.10.0-514.21.2.el7.noarch.rpm
x86_64:
kernel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.21.2.el7.x86_64.rpm
kernel-devel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-headers-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.21.2.el7.x86_64.rpm
perf-3.10.0-514.21.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64:
kernel-debug-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.21.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
kernel-3.10.0-514.21.2.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-514.21.2.el7.noarch.rpm
kernel-doc-3.10.0-514.21.2.el7.noarch.rpm
ppc64:
kernel-3.10.0-514.21.2.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-514.21.2.el7.ppc64.rpm
kernel-debug-3.10.0-514.21.2.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
kernel-debug-devel-3.10.0-514.21.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-514.21.2.el7.ppc64.rpm
kernel-devel-3.10.0-514.21.2.el7.ppc64.rpm
kernel-headers-3.10.0-514.21.2.el7.ppc64.rpm
kernel-tools-3.10.0-514.21.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
kernel-tools-libs-3.10.0-514.21.2.el7.ppc64.rpm
perf-3.10.0-514.21.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
python-perf-3.10.0-514.21.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
ppc64le:
kernel-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-debug-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-devel-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-headers-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-tools-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-514.21.2.el7.ppc64le.rpm
perf-3.10.0-514.21.2.el7.ppc64le.rpm
perf-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
python-perf-3.10.0-514.21.2.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
s390x:
kernel-3.10.0-514.21.2.el7.s390x.rpm
kernel-debug-3.10.0-514.21.2.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-514.21.2.el7.s390x.rpm
kernel-debug-devel-3.10.0-514.21.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-514.21.2.el7.s390x.rpm
kernel-devel-3.10.0-514.21.2.el7.s390x.rpm
kernel-headers-3.10.0-514.21.2.el7.s390x.rpm
kernel-kdump-3.10.0-514.21.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-514.21.2.el7.s390x.rpm
kernel-kdump-devel-3.10.0-514.21.2.el7.s390x.rpm
perf-3.10.0-514.21.2.el7.s390x.rpm
perf-debuginfo-3.10.0-514.21.2.el7.s390x.rpm
python-perf-3.10.0-514.21.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.s390x.rpm
x86_64:
kernel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.21.2.el7.x86_64.rpm
kernel-devel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-headers-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.21.2.el7.x86_64.rpm
perf-3.10.0-514.21.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64:
kernel-debug-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-514.21.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-514.21.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.ppc64.rpm
ppc64le:
kernel-debug-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-514.21.2.el7.ppc64le.rpm
perf-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.ppc64le.rpm
x86_64:
kernel-debug-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.21.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
kernel-3.10.0-514.21.2.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-514.21.2.el7.noarch.rpm
kernel-doc-3.10.0-514.21.2.el7.noarch.rpm
x86_64:
kernel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.21.2.el7.x86_64.rpm
kernel-devel-3.10.0-514.21.2.el7.x86_64.rpm
kernel-headers-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.21.2.el7.x86_64.rpm
perf-3.10.0-514.21.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
kernel-debug-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.21.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.21.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.21.2.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-2017-1000364
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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