{"id":"RLSA-2026:59737","summary":"Important: kernel-rt security, bug fix, and enhancement update","details":"The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: sctp: purge outqueue on stale COOKIE-ECHO handling (CVE-2026-52924)\n\n* kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886)\n\n* kernel: netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check (CVE-2026-63913)\n\n* kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191)\n\n* kernel: netfilter: ipset: fix race between dump and ip_set_list resize (CVE-2026-64189)\n\n* kernel: nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page (CVE-2026-64320)\n\n* kernel: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count (CVE-2026-64277)\n\n* kernel: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count (CVE-2026-64276)\n\nBug Fix(es) and Enhancement(s):\n\n* [Rocky Linux-RT] usb_hub_wq items may run on isolated+nohz_full cores (JIRA:Rocky Linux-178088)\n\n* SELinux TCP/MPTCP connect check bypass via TCP Fast Open [rhel-8.10.z] (JIRA:Rocky Linux-222800)\n\n* ss core dumped when there is an SCTP session [rhel-8.10.z] (JIRA:Rocky Linux-212400)\n\nFor 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.","modified":"2026-08-27T12:30:20.849132079Z","published":"2026-08-27T12:02:32.959504Z","upstream":["CVE-2026-52924","CVE-2026-63886","CVE-2026-63913","CVE-2026-64189","CVE-2026-64191","CVE-2026-64276","CVE-2026-64277","CVE-2026-64320"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:59737"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:59737"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492095"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502329"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502438"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502872"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502889"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507061"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507290"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507301"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:59737"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/kernel-rt?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.18.0-553.158.1.rt7.499.el8_10"}],"database_specific":{"yum_repository":"NFV"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:59737.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}