RHSA-2021:4871: Important: kernel security and bug fix update
First published: Tue Nov 30 2021(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free (CVE-2020-36385)</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.<br>Bug Fix(es):<br><li> [IBM 8.4] [P10] P10 hardware counter (performance counters/perf:) support (BZ#1994075)</li> <li> RHEL8.1 Snapshot1 - [4.18.0-128.el8.ppc64le] [ Brazos 31TB/192 Core ] While running upstream kernel selftest case system crashed (TM) (BZ#1996057)</li> <li> [kernel-debug] WARNING: possible circular locking dependency detected (module_mutex & text_mutex) (BZ#2013777)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/bpftool | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/bpftool-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-abi-whitelists | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-core | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-cross-headers | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-core | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-modules | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-modules-extra | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-doc | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-headers | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-modules | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-modules-extra | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools-libs | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/perf | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/perf-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/python3-perf | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/python3-perf-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/bpftool | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/bpftool-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-core | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-cross-headers | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-core | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-modules | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-modules-extra | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debuginfo-common-s390x | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-headers | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-modules | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-modules-extra | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-zfcpdump | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-zfcpdump-core | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-zfcpdump-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-zfcpdump-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-zfcpdump-modules | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-zfcpdump-modules-extra | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/perf | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/perf-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/python3-perf | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/python3-perf-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/bpftool | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/bpftool-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-core | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-cross-headers | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-core | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-modules | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debug-modules-extra | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-debuginfo-common-ppc64le | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-headers | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-modules | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-modules-extra | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools-libs | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/perf | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/perf-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/python3-perf | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/python3-perf-debuginfo | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/bpftool | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/bpftool-debuginfo | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-core | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-cross-headers | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-debug | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-debug-core | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-debug-debuginfo | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-debug-devel | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-debug-modules | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-debug-modules-extra | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-debuginfo | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-debuginfo-common-aarch64 | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-devel | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-headers | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-modules | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-modules-extra | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-tools | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-tools-debuginfo | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-tools-libs | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/perf | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/perf-debuginfo | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/python3-perf | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/python3-perf-debuginfo | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
| redhat/kernel-tools-libs-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools-libs-devel | <4.18.0-193.70.1.el8_2 | 4.18.0-193.70.1.el8_2 |
| redhat/kernel-tools-libs-devel | <4.18.0-193.70.1.el8_2.aa | 4.18.0-193.70.1.el8_2.aa |
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Reference Links
- agent/description
- agent/event
- agent/first-publish-date
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/severity
- agent/softwarecombine
- agent/tags
- agent/title
- agent/type
- agent/weakness
- collector/redhat-errata
- source/Red Hat
- anchor-id/RHSA-2021:4871
- agent/software-canonical-lookup
- package-manager/redhat