Issued:
2018-11-26
Updated:
2018-11-26

RHSA-2018:3666 - Moderate: kernel-rt security and bug fix update

Synopsis

Moderate: kernel-rt security and bug fix update

Type/Severity

Security Advisory Moderate

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi target (CVE-2018-14633)

  • kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service (CVE-2018-14646)

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 Vincent Pelletier for reporting CVE-2018-14633 and Christian Brauner for reporting CVE-2018-14646.

Bug Fix(es):

  • The kernel-rt packages have been upgraded to the 3.10.0-957.1.2 source tree, which provides a number of bug fixes over the previous version. (BZ#1632386)

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

ProductVersionArch
Red Hat Enterprise Linux for Real Time7x86_64
Red Hat Enterprise Linux for Real Time for x86_64 - Extended Life Cycle Support7x86_64
Red Hat Enterprise Linux for Real Time for NFV7x86_64

Updated Packages

  • kernel-rt-debug-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-trace-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-debug-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-debug-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-trace-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-trace-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-trace-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-3.10.0-957.1.3.rt56.913.el7.src.rpm
  • kernel-rt-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-doc-3.10.0-957.1.3.rt56.913.el7.noarch.rpm
  • kernel-rt-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-trace-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-debug-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm
  • kernel-rt-debug-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm

Fixes

CVEs

References

Additional information