RHSA-2021:0184: Important: kernel security and bug fix update
First published: Tue Jan 19 2021(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)</li> <li> kernel: information exposure in drivers/char/random.c and kernel/time/timer.c (CVE-2020-16166)</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> RHEL8.1 - net/smc: fix silent data corruption in SMC (BZ#1882242)</li> <li> RHEL8.1 - Random memory corruption may occur due to incorrect tlbflush (BZ#1899210)</li> <li> RHEL8.3 Beta - RHEL8.3 hangs on dbginfo.sh execution, crash dump generated (mm-) (BZ#1903021)</li> <li> [Azure][RHEL8] IP forwarding issue in netvsc (BZ#1904327)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/bpftool | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/bpftool-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-abi-whitelists | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-core | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-cross-headers | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-core | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-modules | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-modules-extra | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-doc | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-headers | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-modules | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-modules-extra | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools-libs | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/perf | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/perf-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/python3-perf | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/python3-perf-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/bpftool | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/bpftool-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-core | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-cross-headers | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-core | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-modules | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-modules-extra | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debuginfo-common-s390x | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-headers | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-modules | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-modules-extra | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-zfcpdump | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-zfcpdump-core | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-zfcpdump-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-zfcpdump-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-zfcpdump-modules | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-zfcpdump-modules-extra | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/perf | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/perf-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/python3-perf | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/python3-perf-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/bpftool | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/bpftool-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-core | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-cross-headers | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-core | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-modules | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debug-modules-extra | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-debuginfo-common-ppc64le | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-headers | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-modules | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-modules-extra | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools-libs | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/perf | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/perf-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/python3-perf | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/python3-perf-debuginfo | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/bpftool | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/bpftool-debuginfo | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-core | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-cross-headers | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-debug | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-debug-core | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-debug-debuginfo | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-debug-devel | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-debug-modules | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-debug-modules-extra | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-debuginfo | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-debuginfo-common-aarch64 | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-devel | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-headers | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-modules | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-modules-extra | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-tools | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-tools-debuginfo | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-tools-libs | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/perf | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/perf-debuginfo | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/python3-perf | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/python3-perf-debuginfo | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
| redhat/kernel-tools-libs-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools-libs-devel | <4.18.0-147.38.1.el8_1 | 4.18.0-147.38.1.el8_1 |
| redhat/kernel-tools-libs-devel | <4.18.0-147.38.1.el8_1.aa | 4.18.0-147.38.1.el8_1.aa |
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Reference Links
Frequently Asked Questions
What are the security vulnerabilities addressed in RHSA-2021:0184?
RHSA-2021:0184 addresses a local buffer overflow in ctnetlink_parse_tuple_filter (CVE-2020-25211) and an information exposure in drivers.
How can I resolve the vulnerabilities associated with RHSA-2021:0184?
To fix vulnerabilities associated with RHSA-2021:0184, upgrade to the kernel package version 4.18.0-147.38.1.el8_1 or later.
What is the severity level of RHSA-2021:0184?
The severity level of RHSA-2021:0184 is classified as important.
Which packages are affected by RHSA-2021:0184?
RHSA-2021:0184 affects several packages, including kernel, bpftool, and kernel-core among others.
What kernel version includes the fix for RHSA-2021:0184?
The fix for RHSA-2021:0184 is included in kernel version 4.18.0-147.38.1.el8_1.
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