Issued:: 2018-04-17
Updated:: 2018-04-17

RHSA-2018:1130 - Important: kernel security and bug fix update

Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.4 Extended Update Support.

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 vulnerability in DCCP socket (CVE-2017-8824, Important)
kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important)
kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate)
kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate)
kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate)
kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate)
kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ (CVE-2017-1000252, Moderate)
kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate)

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 Mohamed Ghannam for reporting CVE-2017-8824; Jan H. Schönherr (Amazon) for reporting CVE-2017-1000252; and Armis Labs for reporting CVE-2017-1000410.

Bug Fix(es):

These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/articles/3411331

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 Enterprise Linux for x86_64 - Update Services for SAP Solutions	7.4	x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support	7.4	x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support	7.4	ppc64le
Red Hat Enterprise Linux for Power, big endian - Extended Update Support	7.4	ppc64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support	7.4	s390x
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions	7.4	ppc64le
Red Hat Enterprise Linux Server - TUS	7.4	x86_64
Red Hat Enterprise Linux Server - AUS	7.4	x86_64
Red Hat Enterprise Linux EUS Compute Node	7.4	x86_64

Updated Packages

kernel-tools-3.10.0-693.25.2.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-debug-3.10.0-693.25.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm
perf-3.10.0-693.25.2.el7.ppc64.rpm
kernel-tools-3.10.0-693.25.2.el7.x86_64.rpm
perf-3.10.0-693.25.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-693.25.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.25.2.el7.ppc64.rpm
kernel-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-693.25.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.25.2.el7.ppc64.rpm
kernel-devel-3.10.0-693.25.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.25.2.el7.x86_64.rpm
kernel-headers-3.10.0-693.25.2.el7.ppc64.rpm
kernel-debug-devel-3.10.0-693.25.2.el7.x86_64.rpm
kernel-kdump-3.10.0-693.25.2.el7.s390x.rpm
kernel-kdump-devel-3.10.0-693.25.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-3.10.0-693.25.2.el7.x86_64.rpm
perf-3.10.0-693.25.2.el7.x86_64.rpm
kernel-debug-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-devel-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-devel-3.10.0-693.25.2.el7.s390x.rpm
kernel-doc-3.10.0-693.25.2.el7.noarch.rpm
kernel-abi-whitelists-3.10.0-693.25.2.el7.noarch.rpm
perf-debuginfo-3.10.0-693.25.2.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-693.25.2.el7.ppc64.rpm
kernel-3.10.0-693.25.2.el7.s390x.rpm
python-perf-3.10.0-693.25.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.25.2.el7.ppc64.rpm
kernel-headers-3.10.0-693.25.2.el7.s390x.rpm
kernel-debug-3.10.0-693.25.2.el7.ppc64.rpm
kernel-debug-3.10.0-693.25.2.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-693.25.2.el7.s390x.rpm
kernel-debuginfo-common-ppc64-3.10.0-693.25.2.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.25.2.el7.ppc64le.rpm
perf-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-693.25.2.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-693.25.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-693.25.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm
python-perf-3.10.0-693.25.2.el7.ppc64.rpm
python-perf-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-693.25.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-693.25.2.el7.ppc64.rpm
kernel-3.10.0-693.25.2.el7.src.rpm
kernel-tools-debuginfo-3.10.0-693.25.2.el7.ppc64le.rpm
python-perf-3.10.0-693.25.2.el7.s390x.rpm
kernel-tools-libs-devel-3.10.0-693.25.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-headers-3.10.0-693.25.2.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-3.10.0-693.25.2.el7.ppc64.rpm
kernel-headers-3.10.0-693.25.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.25.2.el7.ppc64.rpm
kernel-debug-devel-3.10.0-693.25.2.el7.s390x.rpm
kernel-tools-libs-devel-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-devel-3.10.0-693.25.2.el7.ppc64.rpm
kernel-tools-3.10.0-693.25.2.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-693.25.2.el7.ppc64.rpm
kernel-debuginfo-common-s390x-3.10.0-693.25.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-693.25.2.el7.s390x.rpm

Fixes

CVEs

References

Additional information

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