RHSA-2021:0003: Important: kernel security and bug fix update
First published: Mon Jan 04 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> 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> avoid flush_backlog IPI for isolated CPUs by configuring RPS cpumask (BZ#1883314)</li> <li> rngd consumes 100% cpu on rhel-8.3 system in fips mode (BZ#1886192)</li> <li> RHEL8.1 - Random memory corruption may occur due to incorrect tlbflush (BZ#1899208)</li> <li> fips mode boot is broken after adding extrng (BZ#1899584)</li> <li> pmtu of 1280 for vxlan as bridge port won't work (BZ#1902082)</li> <li> rpc task loop with kworker spinning at 100% CPU for 10 minutes when umount an NFS 4.x share with sec=krb5 triggered by unmount of the NFS share (BZ#1907667)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/bpftool | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/bpftool-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-abi-whitelists | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-core | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-cross-headers | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-core | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-modules | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-modules-extra | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-doc | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-headers | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-modules | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-modules-extra | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools-libs | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/perf | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/perf-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/python3-perf | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/python3-perf-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/bpftool | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/bpftool-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-core | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-cross-headers | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-core | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-modules | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-modules-extra | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debuginfo-common-s390x | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-headers | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-modules | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-modules-extra | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-zfcpdump | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-zfcpdump-core | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-zfcpdump-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-zfcpdump-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-zfcpdump-modules | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-zfcpdump-modules-extra | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/perf | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/perf-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/python3-perf | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/python3-perf-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/bpftool | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/bpftool-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-core | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-cross-headers | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-core | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-modules | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debug-modules-extra | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-debuginfo-common-ppc64le | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-headers | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-modules | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-modules-extra | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools-libs | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/perf | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/perf-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/python3-perf | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/python3-perf-debuginfo | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/bpftool | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/bpftool-debuginfo | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-core | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-cross-headers | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-debug | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-debug-core | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-debug-debuginfo | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-debug-devel | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-debug-modules | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-debug-modules-extra | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-debuginfo | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-debuginfo-common-aarch64 | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-devel | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-headers | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-modules | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-modules-extra | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-tools | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-tools-debuginfo | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-tools-libs | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/perf | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/perf-debuginfo | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/python3-perf | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/python3-perf-debuginfo | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
| redhat/kernel-tools-libs-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools-libs-devel | <4.18.0-240.10.1.el8_3 | 4.18.0-240.10.1.el8_3 |
| redhat/kernel-tools-libs-devel | <4.18.0-240.10.1.el8_3.aa | 4.18.0-240.10.1.el8_3.aa |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2021:0003?
The severity of RHSA-2021:0003 is classified as important.
How do I fix RHSA-2021:0003?
To fix RHSA-2021:0003, you need to update the kernel packages to version 4.18.0-240.10.1.el8_3.
Which systems are affected by RHSA-2021:0003?
RHSA-2021:0003 affects various Red Hat Enterprise Linux 8 systems using kernel packages version prior to 4.18.0-240.10.1.el8_3.
What vulnerability does RHSA-2021:0003 address?
RHSA-2021:0003 addresses a local buffer overflow vulnerability in ctnetlink_parse_tuple_filter (CVE-2020-25211).
When was RHSA-2021:0003 published?
RHSA-2021:0003 was published on January 13, 2021.
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