RHSA-2018:3591: Important: kernel security and bug fix update

Published Nov 13, 2018
·
Updated

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: out-of-bounds access in the showtimer function in kernel/time/posix-timers.c (CVE-2017-18344) kernel: Integer overflow in Linux's createelftables function (CVE-2018-14634) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.Red Hat would like to thank Qualys Research Labs for reporting CVE-2018-14634.Bug Fix(es): On systems running Red Hat Enterprise Linux 7.3 with Red Hat OpenShift Container Platform 3.5, a node sometimes got into "NodeNotReady" state after a CPU softlockup. Consequently, the node was not available. This update fixes some scheduling latency sources in memory compaction and in the inodes memory reclaim. As a result, nodes no longer get into "NodeNotReady" state under the described circumstances. (BZ#1625866) Previously, a kernel panic occurred when the kernel tried to make an out of bound access to the array that describes the L1 Terminal Fault (L1TF) mitigation state on systems without Extended Page Tables (EPT) support. This update extends the array of mitigation states to cover all the states, which effectively prevents out of bound array access. Also, this update enables rejecting invalid, irrelevant values, that might be erroneously provided by the userspace. As a result, the kernel no longer panics in the described scenario. (BZ#1629566) Previously, a packet was missing the User Datagram Protocol (UDP) payload checksum during a full checksum computation, if the hardware checksum was not applied. As a consequence, a packet with an incorrect checksum was dropped by a peer. With this update, the kernel includes the UDP payload checksum during the full checksum computation. As a result, the checksum is computed correctly and the packet can be received by the peer. (BZ#1635794)

Affected Software

55 affected componentsFixes available
redhat/kernel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-abi-whitelists<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-doc<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-headers<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-libs<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-libs-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/perf<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/perf-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/python-perf<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/python-perf-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debuginfo-common-s390x<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-headers<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-kdump<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-kdump-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-kdump-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/perf<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/perf-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/python-perf<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/python-perf-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-bootwrapper<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debuginfo-common-ppc64<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-libs<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-libs-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-bootwrapper<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debug-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-debuginfo-common-ppc64le<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-headers<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-libs<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/kernel-tools-libs-devel<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/perf<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/perf-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/python-perf<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7
redhat/python-perf-debuginfo<3.10.0-514.61.1.el7
3.10.0-514.61.1.el7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  2. Upgrade

    Upgrade redhat/kernel-abi-whitelists to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  3. Upgrade

    Upgrade redhat/kernel-debug to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  4. Upgrade

    Upgrade redhat/kernel-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  5. Upgrade

    Upgrade redhat/kernel-debug-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  6. Upgrade

    Upgrade redhat/kernel-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  7. Upgrade

    Upgrade redhat/kernel-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  8. Upgrade

    Upgrade redhat/kernel-doc to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  9. Upgrade

    Upgrade redhat/kernel-headers to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  10. Upgrade

    Upgrade redhat/kernel-tools to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  11. Upgrade

    Upgrade redhat/kernel-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  12. Upgrade

    Upgrade redhat/kernel-tools-libs to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  13. Upgrade

    Upgrade redhat/kernel-tools-libs-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  14. Upgrade

    Upgrade redhat/perf to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  15. Upgrade

    Upgrade redhat/perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  16. Upgrade

    Upgrade redhat/python-perf to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  17. Upgrade

    Upgrade redhat/python-perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  18. Upgrade

    Upgrade redhat/kernel-debuginfo-common-s390x to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  19. Upgrade

    Upgrade redhat/kernel-kdump to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  20. Upgrade

    Upgrade redhat/kernel-kdump-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  21. Upgrade

    Upgrade redhat/kernel-kdump-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  22. Upgrade

    Upgrade redhat/kernel-bootwrapper to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  23. Upgrade

    Upgrade redhat/kernel-debuginfo-common-ppc64 to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  24. Upgrade

    Upgrade redhat/kernel-debuginfo-common-ppc64le to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  25. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  26. Upgrade

    Upgrade kernel-abi-whitelists to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  27. Upgrade

    Upgrade kernel-bootwrapper to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  28. Upgrade

    Upgrade kernel-debug to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  29. Upgrade

    Upgrade kernel-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  30. Upgrade

    Upgrade kernel-debug-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  31. Upgrade

    Upgrade kernel-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  32. Upgrade

    Upgrade kernel-debuginfo-common to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  33. Upgrade

    Upgrade kernel-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  34. Upgrade

    Upgrade kernel-doc to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  35. Upgrade

    Upgrade kernel-headers to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  36. Upgrade

    Upgrade kernel-tools to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  37. Upgrade

    Upgrade kernel-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  38. Upgrade

    Upgrade kernel-tools-libs to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  39. Upgrade

    Upgrade kernel-tools-libs-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  40. Upgrade

    Upgrade perf to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  41. Upgrade

    Upgrade perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  42. Upgrade

    Upgrade python-perf to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  43. Upgrade

    Upgrade python-perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7
  44. Upgrade

    Upgrade kernel-src to a version that resolves this vulnerability.

    Fixed in 3.10.0-514.61.1.el7

Event History

Jun 26, 2026
Advisory Published
via Red Hat·10:59 AM
Data Sourced
via Red Hat·10:59 AM
RemedyDescriptionAffected Software
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Frequently Asked Questions

1

What is the severity of RHSA-2018:3591?

The severity of RHSA-2018:3591 is classified as important.

2

How do I fix RHSA-2018:3591?

To fix RHSA-2018:3591, update your kernel packages to version 3.10.0-514.61.1.el7.

3

What are the vulnerabilities addressed in RHSA-2018:3591?

RHSA-2018:3591 addresses an out-of-bounds access vulnerability in the show_timer function and an integer overflow issue in create_elf_tables.

4

Which systems are affected by RHSA-2018:3591?

RHSA-2018:3591 affects Red Hat Enterprise Linux 7 systems running the kernel package prior to version 3.10.0-514.61.1.el7.

5

Is a reboot required after applying the fix for RHSA-2018:3591?

Yes, a reboot is typically required for the changes to take effect after applying the fix for RHSA-2018:3591.

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