{"schema_version": "1.7.0", "id": "RLSA-2026:26427", "modified": "2026-06-19T00:05:53.974721Z", "published": "2026-06-19T00:00:43.922159Z", "upstream": ["CVE-2026-31669", "CVE-2026-31786", "CVE-2026-31787", "CVE-2026-43110", "CVE-2026-43329", "CVE-2026-46056", "CVE-2026-46125", "CVE-2026-46152"], "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: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)\n\n* kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)\n\n* kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)\n\n* kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)\n\n* kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)\n\n* kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)\n\n* kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)\n\n* kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)\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:8", "name": "kernel", "purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:4.18.0-553.134.1.el8_10"}], "database_specific": {"yum_repository": "BaseOS"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:26427"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461503"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464092"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464096"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467014"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482181"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482563"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482608"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}