{"id":"RLSA-2026:89083","summary":"Important: kernel security, bug fix, and enhancement update","details":"The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: tcp: restrict SO_ATTACH_FILTER to priv users (CVE-2026-53236)\n\n* kernel: fuse: re-lock request before replacing page cache folio (CVE-2026-53388)\n\n* kernel: writeback: fix race between cgroup_writeback_umount() and inode_switch_wbs() (CVE-2026-64378)\n\n* kernel: net: gro: fix double aggregation of flush-marked skbs (CVE-2026-68136)\n\n* kernel: net/packet: avoid fanout hook re-registration after unregister (CVE-2026-68338)\n\n* kernel: net/iucv: fix use-after-free of a severed iucv_path (CVE-2026-68140)\n\n* kernel: net/sched: serialize qdisc_rtab_list against concurrent get/put (CVE-2026-68138)\n\n* kernel: ipvs: reload ip header after head reallocation (CVE-2026-68476)\n\n* kernel: mptcp: options: reset DSS fields in case of unexpected size (CVE-2026-80586)\n\n* kernel: usb: usbfs: fix use-after-free of usb_device in usbdev_release() (CVE-2026-80824)\n\n* kernel: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions (CVE-2026-89638)\n\n* kernel: net/iucv: filter frames in afiucv_hs_rcv() by ingress device (CVE-2026-81003)\n\n* kernel: ipv4: validate checksum_start before completing checksum\n(CVE-2026-99999)\n\nBug Fix(es) and Enhancement(s):\n\n* Backport 6785011f8b16 (\"ipv4: validate checksum_start before completing checksum\") [rhel-8.10.z] (JIRA:Rocky Linux-280584)\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":"2026-10-26T12:30:03.953340471Z","published":"2026-10-26T12:00:53.694784Z","upstream":["CVE-2026-53236","CVE-2026-53388","CVE-2026-64378","CVE-2026-68136","CVE-2026-68138","CVE-2026-68140","CVE-2026-68338","CVE-2026-68476","CVE-2026-80586","CVE-2026-80824","CVE-2026-81003","CVE-2026-89638","CVE-2026-99999"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:89083","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:89083"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492709"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502255"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507296"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2513163"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2513264"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2513293"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2513343"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2516251"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2524438"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528642"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532122"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532515"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2553429"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:89083"}],"affected":[{"package":{"name":"kernel","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.18.0-553.178.1.el8_10"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:89083.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}