{"schema_version": "1.7.0", "id": "RLSA-2026:68531", "modified": "2026-09-19T06:13:18.611690Z", "published": "2026-09-19T06:01:07.228044Z", "upstream": ["CVE-2026-23103", "CVE-2026-31663", "CVE-2026-43233", "CVE-2026-43339", "CVE-2026-46266", "CVE-2026-46306", "CVE-2026-52920", "CVE-2026-53075", "CVE-2026-53131", "CVE-2026-53176", "CVE-2026-53192", "CVE-2026-53223", "CVE-2026-53228", "CVE-2026-53239", "CVE-2026-53268", "CVE-2026-53275", "CVE-2026-63917", "CVE-2026-63919", "CVE-2026-63921", "CVE-2026-64002", "CVE-2026-68143", "CVE-2026-68426"], "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: ipvlan: Make the addrs_lock be per port (CVE-2026-23103)\n\n* kernel: xfrm: hold dev ref until after transport_finish NF_HOOK (CVE-2026-31663)\n\n* kernel: netfilter: nf_conntrack_h323: fix OOB read in decode_choice() (CVE-2026-43233)\n\n* kernel: ipv6: prevent possible UaF in addrconf_permanent_addr() (CVE-2026-43339)\n\n* kernel: inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP (CVE-2026-46266)\n\n* kernel: flow_dissector: do not dissect PPPoE PFC frames (CVE-2026-46306)\n\n* kernel: netfilter: xt_policy: fix strict mode inbound policy matching (CVE-2026-52920)\n\n* kernel: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls (CVE-2026-53075)\n\n* kernel: ipv6: sit: reload inner IPv6 header after GSO offloads (CVE-2026-53228)\n\n* kernel: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN (CVE-2026-53176)\n\n* kernel: netfilter: require Ethernet MAC header before using eth_hdr() (CVE-2026-53131)\n\n* kernel: netfilter: conntrack_irc: fix possible out-of-bounds read (CVE-2026-53268)\n\n* kernel: xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx() (CVE-2026-53239)\n\n* kernel: ALSA: timer: Fix UAF at snd_timer_user_params() (CVE-2026-53192)\n\n* kernel: net: guard timestamp cmsgs to real error queue skbs (CVE-2026-53223)\n\n* kernel: ipv6: mcast: Fix use-after-free when processing MLD queries (CVE-2026-53275)\n\n* kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() (CVE-2026-64002)\n\n* kernel: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate() (CVE-2026-63921)\n\n* kernel: xfrm: input: hold netns during deferred transport reinjection (CVE-2026-63919)\n\n* kernel: ip6: vti: Use ip6_tnl.net in vti6_changelink() (CVE-2026-63917)\n\n* kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)\n\n* kernel: xfrm: fix stale skb->prev after async crypto steals a GSO segment (CVE-2026-68426)\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: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": "0:4.18.0-553.164.1.el8_10"}], "database_specific": {"yum_repository": "BaseOS"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:68531"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436771"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461462"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467135"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468102"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484456"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2486463"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492112"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492295"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492733"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492741"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492747"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492770"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492779"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492792"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492811"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492841"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502363"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502368"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502412"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502434"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513218"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513477"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:68531"}], "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-2026:68531"}}