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====================================================================                   
Red Hat Security Advisory

Synopsis:          Important: kernel-alt security, bug fix, and enhancement update
Advisory ID:       RHSA-2019:4154-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:4154
Issue date:        2019-12-10
CVE Names:         CVE-2017-18203 CVE-2018-14625 CVE-2018-16658
                   CVE-2019-14821
====================================================================
1. Summary:

An update for kernel-alt 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le

3. Description:

The kernel-alt packages provide the Linux kernel version 4.x.

Security Fix(es):

* Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)

* kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows
local users to cause a denial of service (CVE-2017-18203)

* kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)

* kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)

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):

* IPMI use after free issue seen on Marvell ThunderX2 (BZ#1732163)

* kernel: siginfo delivers SEGV_MAPERR instead of SEGV_ACCERR
[rhel-alt-7.6.z] (BZ#1757189)

Enhancement(s):

* [Marvell 7.7 z-stream BUG] CN99xx: DIMM label not extracted in EDAC hw
error log (BZ#1721427)

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

1550811 - CVE-2017-18203 kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service
1619846 - CVE-2018-14625 kernel: use-after-free Read in vhost_transport_send_pkt
1627731 - CVE-2018-16658 kernel: Information leak in cdrom_ioctl_drive_status
1746708 - CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer

6. Package List:

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):

Source:
kernel-alt-4.14.0-115.16.1.el7a.src.rpm

aarch64:
kernel-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-debug-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-debug-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-debug-devel-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-devel-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-headers-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-tools-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-tools-libs-4.14.0-115.16.1.el7a.aarch64.rpm
perf-4.14.0-115.16.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm
python-perf-4.14.0-115.16.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm

noarch:
kernel-abi-whitelists-4.14.0-115.16.1.el7a.noarch.rpm
kernel-doc-4.14.0-115.16.1.el7a.noarch.rpm

ppc64le:
kernel-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-bootwrapper-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-debug-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-debug-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-devel-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-headers-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-tools-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-tools-libs-4.14.0-115.16.1.el7a.ppc64le.rpm
perf-4.14.0-115.16.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm
python-perf-4.14.0-115.16.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm

s390x:
kernel-4.14.0-115.16.1.el7a.s390x.rpm
kernel-debug-4.14.0-115.16.1.el7a.s390x.rpm
kernel-debug-debuginfo-4.14.0-115.16.1.el7a.s390x.rpm
kernel-debug-devel-4.14.0-115.16.1.el7a.s390x.rpm
kernel-debuginfo-4.14.0-115.16.1.el7a.s390x.rpm
kernel-debuginfo-common-s390x-4.14.0-115.16.1.el7a.s390x.rpm
kernel-devel-4.14.0-115.16.1.el7a.s390x.rpm
kernel-headers-4.14.0-115.16.1.el7a.s390x.rpm
kernel-kdump-4.14.0-115.16.1.el7a.s390x.rpm
kernel-kdump-debuginfo-4.14.0-115.16.1.el7a.s390x.rpm
kernel-kdump-devel-4.14.0-115.16.1.el7a.s390x.rpm
perf-4.14.0-115.16.1.el7a.s390x.rpm
perf-debuginfo-4.14.0-115.16.1.el7a.s390x.rpm
python-perf-4.14.0-115.16.1.el7a.s390x.rpm
python-perf-debuginfo-4.14.0-115.16.1.el7a.s390x.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):

aarch64:
kernel-debug-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm
kernel-tools-libs-devel-4.14.0-115.16.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.16.1.el7a.aarch64.rpm

noarch:
kernel-doc-4.14.0-115.16.1.el7a.noarch.rpm

ppc64le:
kernel-debug-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-debug-devel-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm
kernel-tools-libs-devel-4.14.0-115.16.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.16.1.el7a.ppc64le.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2017-18203
https://access.redhat.com/security/cve/CVE-2018-14625
https://access.redhat.com/security/cve/CVE-2018-16658
https://access.redhat.com/security/cve/CVE-2019-14821
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.
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