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Red Hat Enterprise Linux 8 RHSA-2021:2714-01 Important Kernel Security Fix

red hat
Calendar Grey July 20, 2021
Dist Redhat Esm H88
An essential system upgrade and vulnerability patch has just been released for Red Hat Enterprise Linux 8, necessitating a reboot of your machine.
An update for kernel is now available for Red Hat Enterprise Linux 8

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: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)
* kernel: race condition for removal of the HCI controller (CVE-2021-32399)
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):
* pinctrl_emmitsburg: improper configuration (BZ#1963984)
* [Ampere] locking/qrwlock: Fix ordering in queued_write_lock_slowpath (BZ#1964419)
* RHEL8.4 - [P10] [NPIV Multi queue Test kernel- 4.18.0-283.el8.ibmvfc_11022021.ppc64le] DLPAR operation fails for ibmvfc on Denali (ibmvfc/dlpar/RHEL8.4) (BZ#1964697)
* Every server is displaying the same power levels for all of our i40e 25G interfaces. 10G interfaces seem to be correct. Ethtool version is 5.0 (BZ#1967099)
* backport fixes for Connection Tracking offload (BZ#1968679)
* fm10k: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969910)
* ixgbevf: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969911)
* ena: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969913)
* b44, bnx2, bnx2x, bnxt, tg3: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969914)
* e1000, e1000e: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969915)
* ice: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969917)
* igb: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969919)
* igbvf: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969920)
* igc: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969921)
* ixgbe: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969922)
* i40e: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969923)
* iavf: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969925)
* Backport netlink extack tracepoint (BZ#1972938)
* [RHEL8.4] kernel panic when create NPIV port on qedf driver (BZ#1974968)

Topics%20covered

Topics Covered

security advisory bug fix security fix Red Hat Enterprise Linux important kernel system reboot

References

https://access.redhat.com/security/cve/CVE-2021-32399 https://access.redhat.com/security/cve/CVE-2021-33909 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/RHSB-2021-006

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kernel-4.18.0-305.10.2.el8_4.src.rpm
aarch64: bpftool-4.18.0-305.10.2.el8_4.aarch64.rpm bpftool-debuginfo-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-core-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-cross-headers-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-debug-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-debug-core-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-debug-debuginfo-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-debug-devel-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-debug-modules-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-debug-modules-extra-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-debuginfo-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-devel-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-headers-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-modules-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-modules-extra-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-tools-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-tools-debuginfo-4.18.0-305.10.2.el8_4.aarch64.rpm kernel-tools-libs-4.18.0-305.10.2.el8_4.aarch64.rpm perf-4.18.0-305.10.2.el8_4.aarch64.rpm perf-debuginfo-4.18.0-305.10.2.el8_4.aarch64.rpm python3-perf-4.18.0-305.10.2.el8_4.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2714-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2714
Issue date: 2021-07-20

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.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 bug fix security fix Red Hat Enterprise Linux important kernel system reboot

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1970273 - CVE-2021-33909 kernel: size_t-to-int conversion vulnerability in the filesystem layer

1970807 - CVE-2021-32399 kernel: race condition for removal of the HCI controller

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