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RedHat Enterprise Linux 7: Major Kernel Security Fixes in RHSA-2020-4060-01

red hat
Calendar Grey September 29, 2020
Dist Redhat Esm H88
The latest Oracle Security Bulletin outlines critical updates and vulnerability patches, including CVSS scores and step-by-step implementation guidelines.
An update for kernel 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 packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)
* kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c (CVE-2017-18551)
* kernel: race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c leads to use-after-free (CVE-2018-20836)
* kernel: out of bounds write in i2c driver leads to local escalation of privilege (CVE-2019-9454)
* kernel: use after free due to race condition in the video driver leads to local privilege escalation (CVE-2019-9458)
Space precludes documenting all of the security fixes in this advisory. See the descriptions of the remaining security fixes in the related Knowledge Article:
https://access.redhat.com/articles/5442421
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.9 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory security issue local privilege escalation bug fix Red Hat Enterprise Linux important kernel

References

https://access.redhat.com/security/cve/CVE-2017-18551 https://access.redhat.com/security/cve/CVE-2018-20836 https://access.redhat.com/security/cve/CVE-2019-9454 https://access.redhat.com/security/cve/CVE-2019-9458 https://access.redhat.com/security/cve/CVE-2019-12614 https://access.redhat.com/security/cve/CVE-2019-15217 https://access.redhat.com/security/cve/CVE-2019-15807 https://access.redhat.com/security/cve/CVE-2019-15917 https://access.redhat.com/security/cve/CVE-2019-16231 https://access.redhat.com/security/cve/CVE-2019-16233 https://access.redhat.com/security/cve/CVE-2019-16994 https://access.redhat.com/security/cve/CVE-2019-17053 https://access.redhat.com/security/cve/CVE-2019-17055 https://access.redhat.com/security/cve/CVE-2019-18808 https://access.redhat.com/security/cve/CVE-2019-19046 https://access.redhat.com/security/cve/CVE-2019-19055 https://access.redhat.com/security/cve/CVE-2019-19058 https://access.redhat.com/security/cve/CVE-2019-19059 https://access.redhat.com/security/cve/CVE-2019-19062 https://access.redhat.com/security/cve/CVE-2019-19063 https://access.redhat.com/security/cve/CVE-2019-19332 https://access.redhat.com/security/cve/CVE-2019-19447 https://access.redhat.com/security/cve/CVE-2019-19523 Read the Full Advisory

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-1160.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1160.el7.noarch.rpm kernel-doc-3.10.0-1160.el7.noarch.rpm
x86_64: bpftool-3.10.0-1160.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1160.el7.x86_64.rpm kernel-3.10.0-1160.el7.x86_64.rpm kernel-debug-3.10.0-1160.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.el7.x86_64.rpm kernel-debug-devel-3.10.0-1160.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.el7.x86_64.rpm kernel-devel-3.10.0-1160.el7.x86_64.rpm kernel-headers-3.10.0-1160.el7.x86_64.rpm kernel-tools-3.10.0-1160.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.el7.x86_64.rpm kernel-tools-libs-3.10.0-1160.el7.x86_64.rpm perf-3.10.0-1160.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.el7.x86_64.rpm python-perf-3.10.0-1160.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bpftool-debuginfo-3.10.0-1160.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1160.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4060-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4060
Issue date: 2020-09-29

Topic

An update for kernel 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 security issue local privilege escalation bug fix Red Hat Enterprise Linux important kernel

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1448750 - BUG: unable to handle kernel paging request at 0; IP: [] nfsd4_cb_done+0x2b/0x310 [nfsd]

1699402 - smallfile caused kernel Cephfs crash in RHOCS (OpenShift-on-Ceph)

1707796 - CVE-2018-20836 kernel: race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c leads to use-after-free

1718176 - CVE-2019-12614 kernel: null pointer dereference in dlpar_parse_cc_property in arch/powerrc/platforms/pseries/dlpar.c causing denial of service

1724345 - mkfs.xfs hangs issuing discards

1745528 - CVE-2019-15217 kernel: null pointer dereference in drivers/media/usb/zr364xx/zr364xx.c driver

1747216 - CVE-2019-15807 kernel: Memory leak in drivers/scsi/libsas/sas_expander.c

1757368 - CVE-2017-18551 kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c

1758242 - CVE-2019-17053 kernel: unprivileged users able to create RAW sockets in AF_IEEE802154 network protocol

1758248 - CVE-2019-17055 kernel: unprivileged users able to create RAW sockets in AF_ISDN network protocol

1759681 - CVE-2019-16994 kernel: Memory leak in sit_init_net() in net/ipv6/sit.c

1760100 - CVE-2019-15917 kernel: use-after-free in drivers/bluetooth/hci_ldisc.c

1760310 - CVE-2019-16231 kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c

Read the Full Advisory

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