RHSA-2021:2722: Important: kernel security update

Published Jul 20, 2021
·
Updated

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: sizet-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909) 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.

Affected Software

105 affected componentsFixes available
redhat/kernel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/bpftool<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/bpftool-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-abi-whitelists<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-core<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-cross-headers<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-core<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-modules<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-modules-extra<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-doc<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-headers<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-modules<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-modules-extra<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools-libs<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/perf<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/perf-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/python3-perf<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/python3-perf-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/bpftool<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/bpftool-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-core<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-cross-headers<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-core<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-modules<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-modules-extra<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debuginfo-common-s390x<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-headers<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-modules<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-modules-extra<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-zfcpdump<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-zfcpdump-core<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-zfcpdump-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-zfcpdump-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-zfcpdump-modules<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-zfcpdump-modules-extra<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/perf<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/perf-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/python3-perf<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/python3-perf-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/bpftool<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/bpftool-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-core<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-cross-headers<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-core<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-modules<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debug-modules-extra<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-debuginfo-common-ppc64le<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-headers<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-modules<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-modules-extra<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools-libs<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/perf<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/perf-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/python3-perf<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/python3-perf-debuginfo<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/bpftool<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/bpftool-debuginfo<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-core<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-cross-headers<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-debug<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-debug-core<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-debug-debuginfo<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-debug-devel<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-debug-modules<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-debug-modules-extra<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-debuginfo<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-debuginfo-common-aarch64<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-devel<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-headers<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-modules<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-modules-extra<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-tools<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-tools-debuginfo<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-tools-libs<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/perf<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/perf-debuginfo<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/python3-perf<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/python3-perf-debuginfo<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa
redhat/kernel-tools-libs-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools-libs-devel<4.18.0-147.51.2.el8_1
4.18.0-147.51.2.el8_1
redhat/kernel-tools-libs-devel<4.18.0-147.51.2.el8_1.aa
4.18.0-147.51.2.el8_1.aa

Remediation

Event History

Jun 7, 2026
Advisory Published
via Red Hat·08:26 PM
Data Sourced
via Red Hat·08:26 PM
RemedyDescriptionAffected Software
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Frequently Asked Questions

1

What is the severity of RHSA-2021:2722?

The severity of RHSA-2021:2722 is classified as important.

2

How do I fix RHSA-2021:2722?

To fix RHSA-2021:2722, update the kernel and associated packages to version 4.18.0-147.51.2.el8_1.

3

What vulnerability is addressed in RHSA-2021:2722?

RHSA-2021:2722 addresses a size_t-to-int conversion vulnerability in the filesystem layer, identified as CVE-2021-33909.

4

Which systems are affected by RHSA-2021:2722?

RHSA-2021:2722 affects systems running the 4.18 kernel series prior to version 4.18.0-147.51.2.el8_1.

5

Is it safe to apply the fix for RHSA-2021:2722?

Yes, applying the fix for RHSA-2021:2722 is considered safe and necessary to protect against the identified vulnerability.

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