RHSA-2026:67721 — Security Advisory

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 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.

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: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry (CVE-2026-43114)

• kernel: rxrpc: Fix potential UAF after skb_unshare() failure (CVE-2026-45998)

• kernel: selinux: fix overlayfs mmap() and mprotect() access checks (CVE-2026-46054)

• kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)

• kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016)

• kernel: ipv6: fix possible UAF in icmpv6_rcv() (CVE-2026-53006)

• kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp (CVE-2026-53071)

• 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)

• kernel: packet: use consistent hard_header_len in non-ring send paths ()

Bug Fix(es) and Enhancement(s):

• RT scheduler livelock caused by missing backport of 94894c9c477e (JIRA:RHEL-244407)

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.