{ "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-2026-64189", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-64189", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-07-20T16:27:47.767Z", "updatedAt": "2026-10-19T20:28:14.906Z", "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": "netfilter: ipset: fix race between dump and ip_set_list resize", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: fix race between dump and ip_set_list resize\n\nThe release path of ip_set_dump_do() and ip_set_dump_done() read\ninst->ip_set_list via ip_set_ref_netlink(), a plain rcu_dereference_raw()\nof the array pointer. These run from netlink_recvmsg() without the nfnl\nmutex and without an RCU read-side critical section.\n\nA concurrent ip_set_create() can grow the array: it publishes the new\narray, calls synchronize_net() and then kvfree()s the old one. Since the\ndump paths read the array outside any RCU reader, synchronize_net() does\nnot wait for them and the old array can be freed while they still index\ninto it, causing a use-after-free.\n\nThe dumped set itself stays pinned via set->ref_netlink, so only the\narray load needs protecting. Take rcu_read_lock() around it, matching\nip_set_get_byname() and __ip_set_put_byindex().\n\n BUG: KASAN: slab-use-after-free in ip_set_dump_do (net/netfilter/ipset/ip_set_core.c:1697)\n Read of size 8 at addr ffff88800b5c4018 by task exploit/150\n Call Trace:\n ...\n kasan_report (mm/kasan/report.c:595)\n ip_set_dump_do (net/netfilter/ipset/ip_set_core.c:1697)\n netlink_dump (net/netlink/af_netlink.c:2325)\n netlink_recvmsg (net/netlink/af_netlink.c:1976)\n sock_recvmsg (net/socket.c:1159)\n __sys_recvfrom (net/socket.c:2315)\n ...\n Oops: general protection fault, probably for non-canonical address ... KASAN NOPTI\n KASAN: maybe wild-memory-access in range [0x02d6...d0-0x02d6...d7]\n RIP: 0010:ip_set_dump_do (net/netfilter/ipset/ip_set_core.c:1698)\n Kernel panic - not syncing: Fatal exception", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "8a02bdd50b2ecb6d62121d2958d3ea186cc88ce7", "status": "affected", "versionType": "git", "lessThan": "a7a299277959683204d73333c32c092fd69327d4" }, { "version": "8a02bdd50b2ecb6d62121d2958d3ea186cc88ce7", "status": "affected", "versionType": "git", "lessThan": "1bc67c3fc98e9fc07032cc56afcdbc690c47d11e" }, { "version": "8a02bdd50b2ecb6d62121d2958d3ea186cc88ce7", "status": "affected", "versionType": "git", "lessThan": "e8a9976b61f1bc4aa7fd25fa26726dfdf2adf710" }, { "version": "8a02bdd50b2ecb6d62121d2958d3ea186cc88ce7", "status": "affected", "versionType": "git", "lessThan": "96fbafc20ebd9a613736c2998b89c539fe3042f5" }, { "version": "8a02bdd50b2ecb6d62121d2958d3ea186cc88ce7", "status": "affected", "versionType": "git", "lessThan": "ff86ea9b7fdf70564e60436fbee68c96bc459943" }, { "version": "8a02bdd50b2ecb6d62121d2958d3ea186cc88ce7", "status": "affected", "versionType": "git", "lessThan": "81d54c766337b923eec26da0a13406760b091093" }, { "version": "8a02bdd50b2ecb6d62121d2958d3ea186cc88ce7", "status": "affected", "versionType": "git", "lessThan": "e8ee198bbc04a32d336e79160fde980e0235b39f" }, { "version": "8a02bdd50b2ecb6d62121d2958d3ea186cc88ce7", "status": "affected", "versionType": "git", "lessThan": "7cd9103283b26b917360ec99d7d2f2d761bcf1ab" }, { "version": "2f6bf7917f55f9dae913193e49672b3598620eab", "status": "affected", "versionType": "git" }, { "version": "4.19.5", "status": "affected", "versionType": "semver", "lessThan": "4.20" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.20", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.20" }, { "version": "5.10.261", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.212", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.178", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.145", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.96", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.39", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.1.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.1.*" }, { "version": "7.2", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }