Issued:

2019-01-29

Updated:

2019-01-29

RHSA-2019:0163 - 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):

• kernel: Use-after-free due to race condition in AF_PACKET implementation (CVE-2018-18559)

• kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397)

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.

Bug Fix(es):

These updated kernel packages include also numerous bug fixes and enhancements. Space precludes documenting all of the bug fixes in this advisory. See the descriptions in the related Knowledge Article: https://access.redhat.com/articles/3827321

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

Updated Packages

• kernel-debug-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-headers-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-tools-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm
• perf-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-tools-libs-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-debuginfo-common-ppc64-3.10.0-957.5.1.el7.ppc64.rpm
• perf-3.10.0-957.5.1.el7.s390x.rpm
• kernel-headers-3.10.0-957.5.1.el7.s390x.rpm
• python-perf-3.10.0-957.5.1.el7.s390x.rpm
• kernel-debuginfo-common-ppc64le-3.10.0-957.5.1.el7.ppc64le.rpm
• perf-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-devel-3.10.0-957.5.1.el7.ppc64.rpm
• perf-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-tools-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-debuginfo-3.10.0-957.5.1.el7.s390x.rpm
• kernel-debuginfo-common-s390x-3.10.0-957.5.1.el7.s390x.rpm
• kernel-debug-debuginfo-3.10.0-957.5.1.el7.s390x.rpm
• kernel-kdump-debuginfo-3.10.0-957.5.1.el7.s390x.rpm
• kernel-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-devel-3.10.0-957.5.1.el7.s390x.rpm
• python-perf-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-debug-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-bootwrapper-3.10.0-957.5.1.el7.ppc64.rpm
• perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-debug-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-headers-3.10.0-957.5.1.el7.x86_64.rpm
• python-perf-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-debug-3.10.0-957.5.1.el7.s390x.rpm
• kernel-tools-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-tools-libs-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-headers-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-devel-3.10.0-957.5.1.el7.x86_64.rpm
• python-perf-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm
• perf-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm
• python-perf-debuginfo-3.10.0-957.5.1.el7.s390x.rpm
• kernel-debuginfo-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm
• bpftool-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-3.10.0-957.5.1.el7.ppc64.rpm
• perf-3.10.0-957.5.1.el7.ppc64.rpm
• python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-tools-libs-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-tools-libs-devel-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-abi-whitelists-3.10.0-957.5.1.el7.noarch.rpm
• kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm
• perf-debuginfo-3.10.0-957.5.1.el7.s390x.rpm
• kernel-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-tools-libs-devel-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-debug-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-3.10.0-957.5.1.el7.src.rpm
• kernel-tools-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-devel-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-tools-3.10.0-957.5.1.el7.x86_64.rpm
• python-perf-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-debug-devel-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-debug-devel-3.10.0-957.5.1.el7.s390x.rpm
• kernel-doc-3.10.0-957.5.1.el7.noarch.rpm
• python-perf-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-debug-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-tools-libs-devel-3.10.0-957.5.1.el7.x86_64.rpm
• kernel-kdump-devel-3.10.0-957.5.1.el7.s390x.rpm
• kernel-kdump-3.10.0-957.5.1.el7.s390x.rpm
• kernel-3.10.0-957.5.1.el7.s390x.rpm
• kernel-bootwrapper-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-debug-devel-3.10.0-957.5.1.el7.ppc64le.rpm
• kernel-debuginfo-3.10.0-957.5.1.el7.ppc64.rpm
• kernel-debug-devel-3.10.0-957.5.1.el7.x86_64.rpm

Fixes

• This content is not included.BZ - 1641548
• This content is not included.BZ - 1641878

CVEs

• CVE-2018-18397
• CVE-2018-18559

References

• https://access.redhat.com/security/updates/classification/#important

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.