RHSA-2023:5238: Important: kernel security update
First published: Tue Sep 19 2023(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)</li> <li> Kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128)</li> <li> kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)</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 | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/bpftool | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/bpftool-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-abi-whitelists | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-core | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-cross-headers | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-core | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-devel | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-modules | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-modules-extra | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debuginfo-common-ppc64le | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-devel | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-doc | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-headers | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-modules | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-modules-extra | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-tools | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-tools-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-tools-libs | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/perf | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/perf-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/python3-perf | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/python3-perf-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/bpftool | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/bpftool-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-core | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-cross-headers | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-core | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-devel | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-modules | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debug-modules-extra | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-devel | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-headers | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-modules | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-modules-extra | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-tools | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-tools-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/kernel-tools-libs | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/perf | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/perf-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/python3-perf | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
| redhat/python3-perf-debuginfo | <4.18.0-147.90.1.el8_1 | 4.18.0-147.90.1.el8_1 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2023:5238?
The severity of RHSA-2023:5238 is classified as important due to potential vulnerabilities in the kernel.
How do I fix RHSA-2023:5238?
To fix RHSA-2023:5238, update the affected kernel packages to version 4.18.0-147.90.1.el8_1 or later.
What vulnerabilities are addressed in RHSA-2023:5238?
RHSA-2023:5238 addresses vulnerabilities including a Use After Free (UAF) in nftables and others affecting the Linux kernel.
Which systems are affected by RHSA-2023:5238?
RHSA-2023:5238 affects systems running specific versions of the Red Hat kernel and associated packages.
Is a reboot required after applying the fix for RHSA-2023:5238?
Yes, a reboot is required to ensure that the new kernel is loaded after applying the fix for RHSA-2023:5238.
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