RHSA-2023:7434 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter (CVE-2023-1829)

• kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)

• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)

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.

Bug Fix(es):

• kernel-devel RPM cross-compiled by CKI contains host-arch scripts (BZ#2232140)

• netfilter: RHEL 8.8 phase 2 backports from upstream (BZ#2236819)