RHSA-2026:67470 — Security Advisory

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · September 15, 2026

Updated · November 4, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.

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: vhost: move vdpa group bound check to vhost_vdpa (CVE-2026-43248)
kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)
kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)
kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)
kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)
kernel: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF (CVE-2026-72045)
kernel: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer (CVE-2026-74556)

Bug Fix(es) and Enhancement(s):

gfs2: bufdata leaks [rhel-9.8.z] (JIRA:RHEL-178223)

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.