RHSA-2023:5238: Important: kernel security update
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
Remediation
Event History
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.