- Vulnerability/
- RHSA-2021:4647
15/11/2021
22/10/2024
RHSA-2021:4647: Important: kernel security update
First published: Mon Nov 15 2021(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267)</li> <li> kernel: timer tree corruption leads to missing wakeup and system freeze (CVE-2021-20317)</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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/bpftool | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/bpftool-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-abi-stablelists | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-core | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-cross-headers | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-core | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-modules | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-modules-extra | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-doc | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-headers | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-modules | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-modules-extra | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools-libs | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/perf | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/perf-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/python3-perf | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/python3-perf-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/bpftool | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/bpftool-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-core | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-cross-headers | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-core | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-modules | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-modules-extra | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debuginfo-common-s390x | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-headers | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-modules | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-modules-extra | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-zfcpdump | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-zfcpdump-core | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-zfcpdump-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-zfcpdump-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-zfcpdump-modules | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-zfcpdump-modules-extra | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/perf | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/perf-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/python3-perf | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/python3-perf-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/bpftool | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/bpftool-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-core | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-cross-headers | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-core | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-modules | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debug-modules-extra | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-debuginfo-common-ppc64le | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-headers | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-modules | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-modules-extra | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools-libs | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/perf | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/perf-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/python3-perf | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/python3-perf-debuginfo | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/bpftool | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/bpftool-debuginfo | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-core | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-cross-headers | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-debug | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-debug-core | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-debug-debuginfo | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-debug-devel | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-debug-modules | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-debug-modules-extra | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-debuginfo | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-debuginfo-common-aarch64 | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-devel | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-headers | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-modules | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-modules-extra | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-tools | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-tools-debuginfo | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-tools-libs | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/perf | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/perf-debuginfo | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/python3-perf | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/python3-perf-debuginfo | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
| redhat/kernel-tools-libs-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools-libs-devel | <4.18.0-348.2.1.el8_5 | 4.18.0-348.2.1.el8_5 |
| redhat/kernel-tools-libs-devel | <4.18.0-348.2.1.el8_5.aa | 4.18.0-348.2.1.el8_5.aa |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2021:4647?
The severity of RHSA-2021:4647 is classified as important due to multiple vulnerabilities in the Linux kernel.
How do I fix RHSA-2021:4647?
To fix RHSA-2021:4647, update the kernel packages to version 4.18.0-348.2.1.el8_5 or later.
What vulnerabilities are addressed in RHSA-2021:4647?
RHSA-2021:4647 addresses vulnerabilities including CVE-2021-43267 related to insufficient validation of user-supplied sizes.
Which systems are affected by RHSA-2021:4647?
RHSA-2021:4647 affects systems running the Linux kernel version prior to 4.18.0-348.2.1.el8_5.
What are the consequences of not addressing RHSA-2021:4647?
Not addressing RHSA-2021:4647 may leave systems vulnerable to exploitation and compromise.
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