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RedHat 8.1 RHSA-2020:4287-01 Important: Kernel Security Update

red hat
Calendar Grey October 20, 2020
Dist Redhat Esm H88
Critical kernel patch and vulnerability resolution for Red Hat Enterprise Linux 8.1 classified as High Priority. Additional information enclosed.
An update for kernel is now available for Red Hat Enterprise Linux 8.1 Extended Update Support

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: net: bluetooth: type confusion while processing AMP packets (CVE-2020-12351)
* kernel: net: bluetooth: information leak when processing certain AMP packets (CVE-2020-12352)
* kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385)
* kernel: memory corruption in net/packet/af_packet.c leads to elevation of privilege (CVE-2020-14386)
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):
* NFS client autodisconnect timer may fire immediately after TCP connection setup and may cause DoS type reconnect problem in complex network environments (BZ#1873571)
* hang on full fs from trace_cmd (BZ#1875789)
* Secure boot key is not loaded with kernel-4.18.0-232.el8.x86_64 / shim-x64-15-15 (BZ#1877527)
* [RHEL-8.3] Kdump failed to start when secure boot enabled: kexec_file_load failed: Required key not available (BZ#1877529)
* [RHEL-8.3] Kdump/kexec kernel panicked on EFI boot: general protection fault: 0000 [#1] SMP PTI (BZ#1879987)
* [conntrack] udp packet reverse NAT occasionally fail when race condition request combination with the DNAT load balancing rules (BZ#1882096)
* [Regression] RHEL8.3 Beta - Do not initiate shutdown for EPOW_SHUTDOWN_ON_UPS event (BZ#1882244)

Topics%20covered

Topics Covered

security advisory kernel update DoS issue bug fix memory corruption RedHat Important security

References

https://access.redhat.com/security/cve/CVE-2020-12351 https://access.redhat.com/security/cve/CVE-2020-12352 https://access.redhat.com/security/cve/CVE-2020-14385 https://access.redhat.com/security/cve/CVE-2020-14386 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/BleedingTooth

Package List

Red Hat Enterprise Linux BaseOS EUS (v. 8.1):
Source: kernel-4.18.0-147.32.1.el8_1.src.rpm
aarch64: bpftool-4.18.0-147.32.1.el8_1.aarch64.rpm bpftool-debuginfo-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-core-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-cross-headers-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-debug-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-debug-core-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-debug-devel-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-debug-modules-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-debug-modules-extra-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-devel-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-headers-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-modules-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-modules-extra-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-tools-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.32.1.el8_1.aarch64.rpm kernel-tools-libs-4.18.0-147.32.1.el8_1.aarch64.rpm perf-4.18.0-147.32.1.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.32.1.el8_1.aarch64.rpm python3-perf-4.18.0-147.32.1.el8_1.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4287-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4287
Issue date: 2020-10-20

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.1Extended Update Support.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 kernel update DoS issue bug fix memory corruption RedHat Important security

Relevant Releases Architectures

Red Hat CodeReady Linux Builder EUS (v. 8.1) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1874800 - CVE-2020-14385 kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt

1875699 - CVE-2020-14386 kernel: memory corruption in net/packet/af_packet.c leads to elevation of privilege

1886521 - CVE-2020-12351 kernel: net: bluetooth: type confusion while processing AMP packets

1886529 - CVE-2020-12352 kernel: net: bluetooth: information leak when processing certain AMP packets

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