RHSA-2023:5093: Important: kpatch-patch security update
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.Security Fix(es): kernel: UAF in nftables when nftsetlookupglobal triggered after handling named and anonymous sets in batch requests (CVE-2023-3390) kernel: netfilter: nftables: fix chain binding transaction logic in the abort path of NFTMSGNEWRULE (CVE-2023-3610) kernel: net/sched: clsfw component can be exploited as result of failure in tcfchangeindev function (CVE-2023-3776) kernel: netfilter: use-after-free due to improper element removal in nftpipaporemove() (CVE-2023-4004) kernel: netfilter: nftablesnewrule when adding a rule with NFTARULECHAINID leads to use-after-free (CVE-2023-4147) kernel: nftables: use-after-free in nftchainlookupbyid() (CVE-2023-31248) kernel: nftables: stack-out-of-bounds-read in nftbyteordereval() (CVE-2023-35001) 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-2023:5093?
The severity of RHSA-2023:5093 is classified as critical due to a use-after-free vulnerability in nftables.
How do I fix RHSA-2023:5093?
To fix RHSA-2023:5093, update the kpatch-patch package to the latest available version specified by Red Hat.
Which versions are affected by RHSA-2023:5093?
RHSA-2023:5093 affects kpatch-patch versions prior to 5_14_0-284_11_1-1-5.el9_2, 5_14_0-284_18_1-1-4.el9_2, and 5_14_0-284_25_1-1-3.el9_2.
Is a reboot required after applying the fix for RHSA-2023:5093?
Yes, a reboot is recommended after applying the fix for RHSA-2023:5093 to ensure the kernel updates take effect.
What systems are impacted by RHSA-2023:5093?
RHSA-2023:5093 impacts systems running the Red Hat kpatch-patch package on compatible Red Hat Enterprise Linux versions.