Issued at: 2026-09-11
Updated at: 2026-09-11
Advisory content derived from Red Hat RHSA-2026:66324, © 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: Linux kernel: Denial of Service in qla2xxx SCSI driver due to improper command handling after chip reset (CVE-2025-68745)
* kernel: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() (CVE-2026-46149)
* kernel: netfilter: nf_log: validate MAC header was set before dumping it (CVE-2026-52942)
* kernel: sctp: diag: reject stale associations in dump_one path (CVE-2026-52917)
* kernel: net: pull headers in qdisc_pkt_len_segs_init() (CVE-2026-53091)
* kernel: netfilter: nf_conntrack_sip: don't use simple_strtoul (CVE-2026-52986)
* kernel: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing (CVE-2026-53246)
* kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done (CVE-2026-63801)
* kernel: sctp: fix race between sctp_wait_for_connect and peeloff (CVE-2026-63971)
* kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)
* kernel: ixgbevf: fix use-after-free in VEPA multicast source pruning (CVE-2026-64113)
* kernel: sctp: fix auth_hmacs array size in struct sctp_cookie (CVE-2026-68376)
* kernel: tipc: clear sock->sk on the failed-insert path in tipc_sk_create() (CVE-2026-68117)
* kernel: sctp: auth: verify auth requirement when auth_chunk is NULL (CVE-2026-68300)
* kernel: sctp: validate stream count in sctp_process_strreset_inreq() (CVE-2026-68315)
Bug Fix(es) and Enhancement(s):
* scsi: mpt3sas: avoid freeing unallocated PCIe SGL buffers [rhel 8.6.z] (JIRA:Rocky Linux-194117)
* gfs2: harden gfs2_glock_hold [Rocky Linux-8] (JIRA:Rocky Linux-240340)
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.