RHSA-2026:67720 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

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: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)

• kernel: fanotify: fix false positive on permission events (CVE-2026-46150)

• kernel: netfilter: nat: use kfree_rcu to release ops (CVE-2026-53000)

• kernel: memfd: deny writeable mappings when implying SEAL_WRITE (CVE-2026-63952)

• 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: smb: client: fix double-free in SMB2_open() replay (CVE-2026-64382)

• kernel: smb: client: fix query directory replay double-free (CVE-2026-64387)

• kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)

• kernel: crypto: qat - fix VF2PF work teardown race in adf_disable_sriov() (CVE-2026-64438)

• kernel: Linux kernel: Arbitrary code execution via userfaultfd shadow stack manipulation (CVE-2026-68166)

Bug Fix(es) and Enhancement(s):

• [ice] Unexplained random cTE values on NAC and CF [rhel-9.6.z] (JIRA:RHEL-186494)

• CLONE - netfilter: nftables CVE and memory safety backports for 9.6 (JIRA:RHEL-240165)

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.