{"schema_version": "1.7.0", "id": "RLSA-2026:89083", "modified": "2026-10-26T12:12:16.052284Z", "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"], "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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:8", "name": "kernel", "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"}}]}], "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"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:89083"}}