RHSA-2026:65712 — 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 9, 2026

Updated · November 3, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.4 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.

Description

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

Security Fix(es):

kernel: Kernel: Privilege escalation via uninitialized data in vmci transport packet (CVE-2025-38403)
kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry (CVE-2026-43114)
kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels (CVE-2026-46099)
kernel: rxrpc: Fix potential UAF after skb_unshare() failure (CVE-2026-45998)
kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)
kernel: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)
kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)
kernel: ipv6: fix possible UAF in icmpv6_rcv() (CVE-2026-53006)
kernel: ice: fix double-free of tx_buf skb (CVE-2026-53009)
kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196)
kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886)
kernel: crypto: qat - validate RSA CRT component lengths (CVE-2026-64304)

Bug Fix(es) and Enhancement(s):

smb: client: use actual path when queryfs (JIRA:RHEL-145425)
RT scheduler livelock caused by missing backport of 94894c9c477e [rhel-9.4.z] (JIRA:RHEL-244408)
kernel warning : kernel/softirq.c:306 do_softirq_post_smp_call_flush+0x29/0x60 when system is booted with nosmt [rhel-9.4.z] (JIRA:RHEL-80300)

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.