RHSA-2021:3173: Important: kernel security update

Published Aug 17, 2021
·
Updated

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: Improper handling of VMIO|VMPFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543) kernel: out-of-bounds write in xtcompattargetfromuser() in net/netfilter/xtables.c (CVE-2021-22555) 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.

Affected Software

105 affected componentsFixes available
redhat/kernel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/bpftool<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/bpftool-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-abi-whitelists<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-core<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-cross-headers<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-core<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-modules<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-modules-extra<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-doc<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-headers<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-modules<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-modules-extra<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools-libs<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/perf<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/perf-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/python3-perf<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/python3-perf-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/bpftool<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/bpftool-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-core<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-cross-headers<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-core<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-modules<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-modules-extra<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debuginfo-common-s390x<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-headers<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-modules<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-modules-extra<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-zfcpdump<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-zfcpdump-core<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-zfcpdump-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-zfcpdump-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-zfcpdump-modules<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-zfcpdump-modules-extra<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/perf<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/perf-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/python3-perf<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/python3-perf-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/bpftool<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/bpftool-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-core<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-cross-headers<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-core<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-modules<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debug-modules-extra<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-debuginfo-common-ppc64le<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-headers<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-modules<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-modules-extra<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools-libs<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/perf<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/perf-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/python3-perf<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/python3-perf-debuginfo<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/bpftool<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/bpftool-debuginfo<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-core<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-cross-headers<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-debug<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-debug-core<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-debug-debuginfo<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-debug-devel<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-debug-modules<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-debug-modules-extra<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-debuginfo<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-debuginfo-common-aarch64<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-devel<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-headers<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-modules<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-modules-extra<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-tools<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-tools-debuginfo<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-tools-libs<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/perf<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/perf-debuginfo<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/python3-perf<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/python3-perf-debuginfo<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa
redhat/kernel-tools-libs-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools-libs-devel<4.18.0-147.52.1.el8_1
4.18.0-147.52.1.el8_1
redhat/kernel-tools-libs-devel<4.18.0-147.52.1.el8_1.aa
4.18.0-147.52.1.el8_1.aa

Remediation

Event History

Feb 12, 2026
Advisory Published
via Red Hat·02:55 PM
Data Sourced
via Red Hat·02:55 PM
RemedyDescriptionAffected Software
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Frequently Asked Questions

1

What is the severity of RHSA-2021:3173?

The severity of RHSA-2021:3173 is classified as moderate.

2

How do I fix RHSA-2021:3173?

To fix RHSA-2021:3173, update to the kernel version 4.18.0-147.52.1.el8_1 or later.

3

What kind of vulnerabilities are addressed in RHSA-2021:3173?

RHSA-2021:3173 addresses vulnerabilities such as improper handling of VM_IO and out-of-bounds writes.

4

What packages are affected by RHSA-2021:3173?

RHSA-2021:3173 affects various kernel packages, including kernel, kernel-core, and bpftool.

5

When was RHSA-2021:3173 released?

RHSA-2021:3173 was released on November 3, 2021.

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