RHSA-2026:69874 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · September 22, 2026

Updated · November 1, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

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.

Description

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

Security Fix(es):

kernel: smc: Fix use-after-free in tcp_write_timer_handler() (CVE-2023-53781)
kernel: fanotify: fix false positive on permission events (CVE-2026-46150)
kernel: netfilter: conntrack: remove sprintf usage (CVE-2026-53002)
kernel: tipc: fix double-free in tipc_buf_append() (CVE-2026-52993)
kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (CVE-2026-63888)
kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (CVE-2026-63887)
kernel: sctp: don't free the ASCONF's own transport in DEL-IP processing (CVE-2026-64564)

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.