Issued at: 2026-08-27
Updated at: 2026-08-28
Advisory content derived from Red Hat RHSA-2026:59737, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: kernel-rt security, bug fix, and enhancement update
Description
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: sctp: purge outqueue on stale COOKIE-ECHO handling (CVE-2026-52924)
* kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886)
* kernel: netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check (CVE-2026-63913)
* kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191)
* kernel: netfilter: ipset: fix race between dump and ip_set_list resize (CVE-2026-64189)
* kernel: nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page (CVE-2026-64320)
* kernel: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count (CVE-2026-64277)
* kernel: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count (CVE-2026-64276)
Bug Fix(es) and Enhancement(s):
* [Rocky Linux-RT] usb_hub_wq items may run on isolated+nohz_full cores (JIRA:Rocky Linux-178088)
* SELinux TCP/MPTCP connect check bypass via TCP Fast Open [rhel-8.10.z] (JIRA:Rocky Linux-222800)
* ss core dumped when there is an SCTP session [rhel-8.10.z] (JIRA:Rocky Linux-212400)
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.