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RedHat: RHSA-2019-4154-01 Important: Kernel-Alt OOB Memory Issue

red hat
Calendar Grey December 10, 2019
Dist Redhat Esm H88
Critical Notice for Kernel-Alt: Security Improvements and Bug Fixes for Red Hat 7 Users
An update for kernel-alt is now available for Red Hat Enterprise Linux 7

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.

Summary

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)

Topics%20covered

Topics Covered

security advisory denial of service bug fix important red hat enterprise kernel-alt oob memory access

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

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

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

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

Topic

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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service bug fix important red hat enterprise kernel-alt oob memory access

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

Bugs Fixed

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

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