{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-63914", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-63914", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-07-19T14:55:18.618Z", "updatedAt": "2026-10-19T20:17:55.631Z", "importedAt": "2026-10-24T01:58:25.636Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "xfrm: route MIGRATE notifications to caller's netns", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: route MIGRATE notifications to caller's netns\n\nxfrm_send_migrate() in net/xfrm/xfrm_user.c and pfkey_send_migrate()\nin net/key/af_key.c both hardcode &init_net for the multicast that\nannounces a successful XFRM_MSG_MIGRATE / SADB_X_MIGRATE.\n\nXFRM_MSG_MIGRATE arrives on a per-netns NETLINK_XFRM socket, and the\nrest of the xfrm/af_key netlink path was made netns-aware in 2008.\nThe other 14 multicast paths in xfrm_user.c route their event using\nxs_net(x), xp_net(xp) or sock_net(skb->sk); only the migrate path\nwas missed.\n\nTwo consequences of the init_net hardcoding:\n\n 1. The notification (selector, old/new endpoint addresses, and the\n km_address) is delivered to listeners on init_net's\n XFRMNLGRP_MIGRATE / pfkey BROADCAST_ALL groups rather than on\n the issuing netns. An IKE daemon running in init_net therefore\n receives migration notifications originating from any other\n netns on the host.\n\n 2. An IKE daemon running inside a non-init netns and subscribed\n to its own XFRMNLGRP_MIGRATE / pfkey groups never receives the\n notification of its own migration. IKEv2 MOBIKE / address-update\n handling inside a netns is silently broken.\n\nThread struct net through km_migrate() and the xfrm_mgr.migrate\nfunction pointer, drop the &init_net override in xfrm_send_migrate()\nand pfkey_send_migrate(), and pass the caller's net (already in\nscope in xfrm_migrate() via sock_net(skb->sk)) all the way down.\nstruct xfrm_mgr is in-tree only and not exported as a stable API,\nso the function-pointer signature change is internal.\n\npfkey_broadcast() is already netns-aware via net_generic(net,\npfkey_net_id) since the pernet conversion. The five other\npfkey_broadcast() callers in af_key.c already pass xs_net(x),\nsock_net(sk) or a per-netns net, so this only removes the\n&init_net outlier.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "5c79de6e79cd8ecfbae28886be3ee49044f3a4d4", "status": "affected", "versionType": "git", "lessThan": "bafc7d0774b9bf52909c70ed990bc5ccf7ec4bad" }, { "version": "5c79de6e79cd8ecfbae28886be3ee49044f3a4d4", "status": "affected", "versionType": "git", "lessThan": "6df8157547347b5257bf640a0ae3dfc4411e06cd" }, { "version": "5c79de6e79cd8ecfbae28886be3ee49044f3a4d4", "status": "affected", "versionType": "git", "lessThan": "fe463798343382c8fe9416a95959f005a3c30aa5" }, { "version": "5c79de6e79cd8ecfbae28886be3ee49044f3a4d4", "status": "affected", "versionType": "git", "lessThan": "00f2c451e57df50b1151d9b2254878f106b7c892" }, { "version": "5c79de6e79cd8ecfbae28886be3ee49044f3a4d4", "status": "affected", "versionType": "git", "lessThan": "a306cf2ac8849c487791369fad6f216399d000f6" }, { "version": "5c79de6e79cd8ecfbae28886be3ee49044f3a4d4", "status": "affected", "versionType": "git", "lessThan": "448bb92ca101dde8a6e88b4dc824044b4e341604" }, { "version": "5c79de6e79cd8ecfbae28886be3ee49044f3a4d4", "status": "affected", "versionType": "git", "lessThan": "26ce8dbf2e23fe4fcc3351d19ef6d3fb703ed126" }, { "version": "5c79de6e79cd8ecfbae28886be3ee49044f3a4d4", "status": "affected", "versionType": "git", "lessThan": "7e2a4f7ca0952820731ef7bdadfc9a9e9d3571b4" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.21", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.21" }, { "version": "5.10.259", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.210", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.176", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.143", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.93", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.35", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.0.12", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.0.*" }, { "version": "7.1", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }