RHSA-2021:3904: Moderate: kernel security and bug fix update

Published Oct 19, 2021
·
Updated

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653)</li> <li> kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656)</li> 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.<br>Bug Fix(es):<br><li> RHEL8.2 - s390/vtime: fix increased steal time accounting (BZ#1988387)</li> <li> Backport 22e4663e91 ("mm/slub: fix panic in slaballocnode()") (BZ#1996078)</li> <li> Kernel panic at nttysettermios+0x30 (BZ#1998000)</li>

Affected Software

105 affected componentsFixes available
redhat/kernel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/bpftool<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/bpftool-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-abi-whitelists<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-core<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-cross-headers<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-core<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-modules<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-modules-extra<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-doc<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-headers<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-modules<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-modules-extra<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools-libs<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/perf<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/perf-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/python3-perf<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/python3-perf-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/bpftool<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/bpftool-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-core<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-cross-headers<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-core<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-modules<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-modules-extra<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debuginfo-common-s390x<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-headers<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-modules<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-modules-extra<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-zfcpdump<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-zfcpdump-core<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-zfcpdump-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-zfcpdump-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-zfcpdump-modules<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-zfcpdump-modules-extra<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/perf<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/perf-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/python3-perf<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/python3-perf-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/bpftool<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/bpftool-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-core<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-cross-headers<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-core<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-modules<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debug-modules-extra<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-debuginfo-common-ppc64le<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-headers<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-modules<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-modules-extra<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools-libs<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/perf<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/perf-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/python3-perf<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/python3-perf-debuginfo<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/bpftool<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/bpftool-debuginfo<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-core<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-cross-headers<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-debug<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-debug-core<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-debug-debuginfo<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-debug-devel<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-debug-modules<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-debug-modules-extra<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-debuginfo<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-debuginfo-common-aarch64<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-devel<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-headers<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-modules<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-modules-extra<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-tools<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-tools-debuginfo<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-tools-libs<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/perf<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/perf-debuginfo<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/python3-perf<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/python3-perf-debuginfo<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa
redhat/kernel-tools-libs-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools-libs-devel<4.18.0-193.68.1.el8_2
4.18.0-193.68.1.el8_2
redhat/kernel-tools-libs-devel<4.18.0-193.68.1.el8_2.aa
4.18.0-193.68.1.el8_2.aa

Remediation

Event History

Feb 15, 2025
Advisory Published
via Red Hat·03:42 AM
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Frequently Asked Questions

1

What is the severity of RHSA-2021:3904?

The severity of RHSA-2021:3904 is classified as moderate.

2

How do I fix RHSA-2021:3904?

To fix RHSA-2021:3904, update to the kernel version 4.18.0-193.68.1.el8_2 or later.

3

What vulnerabilities are addressed in RHSA-2021:3904?

RHSA-2021:3904 addresses SVM nested virtualization issues in KVM, specifically noted as CVE-2021-3653 and CVE-2021-3656.

4

What components are affected by RHSA-2021:3904?

RHSA-2021:3904 affects various kernel packages, including kernel, kernel-core, and kernel-modules among others.

5

When was RHSA-2021:3904 released?

RHSA-2021:3904 was released on December 8, 2021.

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