RHEL 7 : kernel-alt (RHSA-2019:4154)

high Nessus Plugin ID 131979

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

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.

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)

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2019:4154

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

Plugin Details

Severity: High

ID: 131979

File Name: redhat-RHSA-2019-4154.nasl

Version: 1.2

Type: local

Agent: unix

Published: 12/12/2019

Updated: 12/16/2019

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-s390x, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:perf-debuginfo, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:python-perf-debuginfo, cpe:/o:redhat:enterprise_linux:7

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 12/10/2019

Vulnerability Publication Date: 2/27/2018

Reference Information

CVE: CVE-2017-18203, CVE-2018-14625, CVE-2018-16658, CVE-2019-14821

RHSA: 2019:4154