{"id":"RLSA-2026:21557","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-\u003eprivate 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.","modified":"2026-06-04T12:30:14.818695956Z","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"],"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"}],"affected":[{"package":{"name":"kernel","ecosystem":"Rocky Linux:10","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"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:21557.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}