Issued:: 2020-07-07
Updated:: 2020-07-07

RHSA-2020:2851 - 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 7.6 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: Count overflow in FUSE request leading to use-after-free issues. (CVE-2019-11487)
Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)
Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)
kernel: denial of service via ioctl call in network tun handling (CVE-2018-7191)
kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)
kernel: perf_event_open() and execve() race in setuid programs allows a data leak (CVE-2019-3901)
kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)
kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service (CVE-2019-15916)
kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

kernel: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1840677)

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 - Extended Update Support	4.2	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 - Extended Update Support	7.6	x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support	7.6	ppc64le
Red Hat Enterprise Linux for Power, big endian - Extended Update Support	7.6	ppc64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support	7.6	s390x
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions	7.6	ppc64le
Red Hat Enterprise Linux Server - TUS	7.6	x86_64
Red Hat Enterprise Linux Server - AUS	7.6	x86_64
Red Hat Enterprise Linux EUS Compute Node	7.6	x86_64

Updated Packages

kernel-tools-libs-devel-3.10.0-957.56.1.el7.ppc64le.rpm
perf-3.10.0-957.56.1.el7.ppc64.rpm
kernel-devel-3.10.0-957.56.1.el7.ppc64.rpm
python-perf-3.10.0-957.56.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-957.56.1.el7.ppc64le.rpm
perf-3.10.0-957.56.1.el7.x86_64.rpm
kernel-3.10.0-957.56.1.el7.src.rpm
kernel-debug-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-957.56.1.el7.s390x.rpm
kernel-tools-libs-3.10.0-957.56.1.el7.x86_64.rpm
kernel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.56.1.el7.x86_64.rpm
kernel-headers-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-tools-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debug-3.10.0-957.56.1.el7.x86_64.rpm
kernel-devel-3.10.0-957.56.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-957.56.1.el7.s390x.rpm
kernel-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-tools-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-headers-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.56.1.el7.ppc64le.rpm
perf-3.10.0-957.56.1.el7.s390x.rpm
kernel-tools-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-devel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.56.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.56.1.el7.ppc64.rpm
kernel-3.10.0-957.56.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.ppc64le.rpm
bpftool-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-3.10.0-957.56.1.el7.x86_64.rpm
kernel-kdump-3.10.0-957.56.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debug-3.10.0-957.56.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debug-3.10.0-957.56.1.el7.s390x.rpm
kernel-abi-whitelists-3.10.0-957.56.1.el7.noarch.rpm
python-perf-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-headers-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
kernel-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
python-perf-3.10.0-957.56.1.el7.s390x.rpm
perf-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
perf-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-957.56.1.el7.ppc64.rpm
kernel-headers-3.10.0-957.56.1.el7.s390x.rpm
kernel-doc-3.10.0-957.56.1.el7.noarch.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-devel-3.10.0-957.56.1.el7.ppc64le.rpm

Fixes

CVEs

References

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/.
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