- Issued:
- 2017-08-01
- Updated:
- 2017-08-01
RHSA-2017:1842 - Important: kernel security, bug fix, and enhancement update
Synopsis
Important: kernel security, bug fix, and enhancement update
Type/Severity
Security Advisory Important
Topic
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.
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
-
An use-after-free flaw was found in the Linux kernel which enables a race condition in the L2TPv3 IP Encapsulation feature. A local user could use this flaw to escalate their privileges or crash the system. (CVE-2016-10200, Important)
-
A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges. (CVE-2017-2647, Important)
-
It was found that the NFSv4 server in the Linux kernel did not properly validate layout type when processing NFSv4 pNFS LAYOUTGET and GETDEVICEINFO operands. A remote attacker could use this flaw to soft-lockup the system and thus cause denial of service. (CVE-2017-8797, Important)
This update also fixes multiple Moderate and Low impact security issues:
- CVE-2015-8839, CVE-2015-8970, CVE-2016-9576, CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9588, CVE-2016-9806, CVE-2016-10088, CVE-2016-10147, CVE-2017-2596, CVE-2017-2671, CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7616, CVE-2017-7889, CVE-2017-8890, CVE-2017-9074, CVE-2017-8890, CVE-2017-9075, CVE-2017-8890, CVE-2017-9076, CVE-2017-8890, CVE-2017-9077, CVE-2017-9242, CVE-2014-7970, CVE-2014-7975, CVE-2016-6213, CVE-2016-9604, CVE-2016-9685
Documentation for these issues is available from the Release Notes document linked from the References section.
Red Hat would like to thank Igor Redko (Virtuozzo) and Andrey Ryabinin (Virtuozzo) for reporting CVE-2017-2647; Igor Redko (Virtuozzo) and Vasily Averin (Virtuozzo) for reporting CVE-2015-8970; Marco Grassi for reporting CVE-2016-8645; and Dmitry Vyukov (Google Inc.) for reporting CVE-2017-2596. The CVE-2016-7042 issue was discovered by Ondrej Kozina (Red Hat); the CVE-2016-7097 issue was discovered by Andreas Gruenbacher (Red Hat) and Jan Kara (SUSE); the CVE-2016-6213 and CVE-2016-9685 issues were discovered by Qian Cai (Red Hat); and the CVE-2016-9604 issue was discovered by David Howells (Red Hat).
Additional Changes:
For detailed information on other changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.
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.
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Virtualization Host | 4 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.7 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.6 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.4 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.7 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.6 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.5 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.4 | x86_64 |
| Red Hat Enterprise Linux for Scientific Computing | 7 | x86_64 |
| Red Hat Enterprise Linux for Power, little endian | 7 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 7.7 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 7.6 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 7.5 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 7.4 | ppc64le |
| Red Hat Enterprise Linux for Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.7 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.6 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.5 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.4 | ppc64 |
| Red Hat Enterprise Linux for IBM z Systems | 7 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 7.7 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 7.6 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 7.5 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 7.4 | s390x |
| Red Hat Enterprise Linux Workstation | 7 | x86_64 |
| Red Hat Enterprise Linux Server | 7 | x86_64 |
| Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions | 7.7 | ppc64le |
| Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions | 7.6 | ppc64le |
| Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions | 7.4 | ppc64le |
| Red Hat Enterprise Linux Server - TUS | 7.7 | x86_64 |
| Red Hat Enterprise Linux Server - TUS | 7.6 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 7 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian | 7 | ppc64le |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) | 7 | s390x |
| Red Hat Enterprise Linux Server - AUS | 7.7 | x86_64 |
| Red Hat Enterprise Linux Server - AUS | 7.6 | x86_64 |
| Red Hat Enterprise Linux Server - AUS | 7.4 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.7 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.6 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.5 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.4 | x86_64 |
| Red Hat Enterprise Linux Desktop | 7 | x86_64 |
Updated Packages
- kernel-abi-whitelists-3.10.0-693.el7.noarch.rpm
- perf-3.10.0-693.el7.ppc64.rpm
- perf-3.10.0-693.el7.s390x.rpm
- kernel-debug-3.10.0-693.el7.ppc64le.rpm
- kernel-debug-debuginfo-3.10.0-693.el7.x86_64.rpm
- kernel-kdump-devel-3.10.0-693.el7.s390x.rpm
- kernel-tools-libs-devel-3.10.0-693.el7.ppc64.rpm
- perf-3.10.0-693.el7.ppc64le.rpm
- kernel-debug-debuginfo-3.10.0-693.el7.s390x.rpm
- kernel-headers-3.10.0-693.el7.ppc64le.rpm
- kernel-tools-3.10.0-693.el7.ppc64.rpm
- kernel-tools-libs-3.10.0-693.el7.x86_64.rpm
- kernel-tools-libs-devel-3.10.0-693.el7.ppc64le.rpm
- kernel-debug-3.10.0-693.el7.ppc64.rpm
- kernel-headers-3.10.0-693.el7.ppc64.rpm
- kernel-headers-3.10.0-693.el7.s390x.rpm
- python-perf-debuginfo-3.10.0-693.el7.ppc64.rpm
- kernel-kdump-debuginfo-3.10.0-693.el7.s390x.rpm
- kernel-debug-3.10.0-693.el7.s390x.rpm
- kernel-debug-debuginfo-3.10.0-693.el7.ppc64le.rpm
- kernel-debuginfo-common-ppc64-3.10.0-693.el7.ppc64.rpm
- kernel-tools-debuginfo-3.10.0-693.el7.ppc64le.rpm
- kernel-3.10.0-693.el7.x86_64.rpm
- kernel-3.10.0-693.el7.src.rpm
- perf-debuginfo-3.10.0-693.el7.s390x.rpm
- kernel-tools-3.10.0-693.el7.ppc64le.rpm
- kernel-debug-devel-3.10.0-693.el7.s390x.rpm
- python-perf-debuginfo-3.10.0-693.el7.s390x.rpm
- kernel-debuginfo-common-ppc64le-3.10.0-693.el7.ppc64le.rpm
- kernel-devel-3.10.0-693.el7.s390x.rpm
- kernel-kdump-3.10.0-693.el7.s390x.rpm
- kernel-tools-debuginfo-3.10.0-693.el7.x86_64.rpm
- kernel-tools-libs-3.10.0-693.el7.ppc64le.rpm
- kernel-headers-3.10.0-693.el7.x86_64.rpm
- kernel-tools-libs-3.10.0-693.el7.ppc64.rpm
- kernel-debuginfo-common-s390x-3.10.0-693.el7.s390x.rpm
- kernel-debuginfo-3.10.0-693.el7.x86_64.rpm
- kernel-tools-3.10.0-693.el7.x86_64.rpm
- kernel-debug-debuginfo-3.10.0-693.el7.ppc64.rpm
- kernel-devel-3.10.0-693.el7.ppc64.rpm
- kernel-devel-3.10.0-693.el7.x86_64.rpm
- python-perf-debuginfo-3.10.0-693.el7.ppc64le.rpm
- kernel-debuginfo-3.10.0-693.el7.ppc64.rpm
- kernel-debug-3.10.0-693.el7.x86_64.rpm
- kernel-debug-devel-3.10.0-693.el7.ppc64.rpm
- perf-debuginfo-3.10.0-693.el7.ppc64le.rpm
- kernel-3.10.0-693.el7.ppc64.rpm
- python-perf-debuginfo-3.10.0-693.el7.x86_64.rpm
- python-perf-3.10.0-693.el7.ppc64le.rpm
- kernel-debuginfo-3.10.0-693.el7.ppc64le.rpm
- perf-debuginfo-3.10.0-693.el7.ppc64.rpm
- perf-debuginfo-3.10.0-693.el7.x86_64.rpm
- kernel-bootwrapper-3.10.0-693.el7.ppc64le.rpm
- perf-3.10.0-693.el7.x86_64.rpm
- kernel-bootwrapper-3.10.0-693.el7.ppc64.rpm
- kernel-3.10.0-693.el7.s390x.rpm
- kernel-doc-3.10.0-693.el7.noarch.rpm
- kernel-devel-3.10.0-693.el7.ppc64le.rpm
- python-perf-3.10.0-693.el7.ppc64.rpm
- kernel-3.10.0-693.el7.ppc64le.rpm
- python-perf-3.10.0-693.el7.s390x.rpm
- kernel-debug-devel-3.10.0-693.el7.ppc64le.rpm
- kernel-debug-devel-3.10.0-693.el7.x86_64.rpm
- kernel-debuginfo-common-x86_64-3.10.0-693.el7.x86_64.rpm
- kernel-tools-debuginfo-3.10.0-693.el7.ppc64.rpm
- kernel-tools-libs-devel-3.10.0-693.el7.x86_64.rpm
- kernel-debuginfo-3.10.0-693.el7.s390x.rpm
- python-perf-3.10.0-693.el7.x86_64.rpm
Fixes
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CVEs
- CVE-2014-7970
- CVE-2014-7975
- CVE-2015-8839
- CVE-2015-8970
- CVE-2016-6213
- CVE-2016-7042
- CVE-2016-7097
- CVE-2016-8645
- CVE-2016-9576
- CVE-2016-9588
- CVE-2016-9604
- CVE-2016-9685
- CVE-2016-9806
- CVE-2016-10088
- CVE-2016-10147
- CVE-2016-10200
- CVE-2016-10741
- CVE-2017-2584
- CVE-2017-2596
- CVE-2017-2647
- CVE-2017-2671
- CVE-2017-5551
- CVE-2017-5970
- CVE-2017-6001
- CVE-2017-6951
- CVE-2017-7187
- CVE-2017-7495
- CVE-2017-7616
- CVE-2017-7889
- CVE-2017-8797
- CVE-2017-8890
- CVE-2017-9074
- CVE-2017-9075
- CVE-2017-9076
- CVE-2017-9077
- CVE-2017-9242
- CVE-2017-1000253
- CVE-2017-1000379
References
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.4_Release_Notes/index.html
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.