{"schema_version": "1.7.0", "id": "RLSA-2026:21557", "modified": "2026-06-04T12:05:43.867712Z", "published": "2026-06-04T12:04:37.164871Z", "upstream": ["CVE-2024-56645", "CVE-2025-68183", "CVE-2026-23375", "CVE-2026-23392", "CVE-2026-23455", "CVE-2026-31684", "CVE-2026-31685", "CVE-2026-43006", "CVE-2026-43020", "CVE-2026-43023", "CVE-2026-43027", "CVE-2026-43051", "CVE-2026-43110", "CVE-2026-43116", "CVE-2026-43158", "CVE-2026-43190", "CVE-2026-43205", "CVE-2026-43303"], "summary": "Important: kernel security update", "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: can: j1939: j1939_session_new(): fix skb reference counting (CVE-2024-56645)\n\n* kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183)\n\n* kernel: mm: thp: deny THP for files on anonymous inodes (CVE-2026-23375)\n\n* kernel: netfilter: nf_tables: release flowtable after rcu grace period on error (CVE-2026-23392)\n\n* kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CVE-2026-23455)\n\n* kernel: net: sched: act_csum: validate nested VLAN headers (CVE-2026-31684)\n\n* kernel: netfilter: ip6t_eui64: reject invalid MAC header for all packets (CVE-2026-31685)\n\n* kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027)\n\n* kernel: io_uring/rsrc: reject zero-length fixed buffer import (CVE-2026-43006)\n\n* kernel: Bluetooth: MGMT: validate LTK enc_size on load (CVE-2026-43020)\n\n* kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CVE-2026-43051)\n\n* kernel: Bluetooth: SCO: fix race conditions in sco_sock_connect() (CVE-2026-43023)\n\n* kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116)\n\n* kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)\n\n* kernel: netfilter: xt_tcpmss: check remaining length before reading optlen (CVE-2026-43190)\n\n* kernel: Linux kernel dpaa2-switch: Kernel memory corruption via out-of-bounds write (CVE-2026-43205)\n\n* kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158)\n\n* kernel: mm/page_alloc: clear page->private in free_pages_prepare() (CVE-2026-43303)\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:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:10", "name": "kernel", "purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-10&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:6.12.0-211.18.1.el10_2"}], "database_specific": {"yum_repository": "BaseOS"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:21557"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464455"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454810"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467090"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467210"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467005"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468091"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422699"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461757"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464402"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464462"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464369"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467014"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451218"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467064"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451199"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461759"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334560"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464496"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}