RHSA-2021:3173: Important: kernel security update
First published: Tue Aug 17 2021(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)</li> <li> kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)</li> <li> kernel: race condition for removal of the HCI controller (CVE-2021-32399)</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 | <4.18.0-147.52.1.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 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2021:3173?
The severity of RHSA-2021:3173 is classified as moderate.
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.
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.
What packages are affected by RHSA-2021:3173?
RHSA-2021:3173 affects various kernel packages, including kernel, kernel-core, and bpftool.
When was RHSA-2021:3173 released?
RHSA-2021:3173 was released on November 3, 2021.
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