{"id":"CVE-2026-64569","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-64569","generatedAt":"2026-10-28T02:18:51.954Z","title":"In the Linux kernel, the following vulnerability has been resolved: mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n On CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed attribute table itself instead of calling…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n\n\nOn CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed\nattribute table itself instead of calling ip_valid_fib_dump_req(). The\nRTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is\npresent, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no\nRTA_OIF hits a NULL dereference.\n\nRTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without\nCAP_NET_ADMIN, so an unprivileged user can trigger it.\n\n  Oops: general protection fault, probably for non-canonical address\n        0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\n  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189)\n  Call Trace:\n   mpls_dump_routes (net/mpls/af_mpls.c:2236)\n   netlink_dump (net/netlink/af_netlink.c:2331)\n   __netlink_dump_start (net/netlink/af_netlink.c:2446)\n   rtnetlink_rcv_msg (net/core/rtnetlink.c:7033)\n   netlink_rcv_skb (net/netlink/af_netlink.c:2556)\n   netlink_unicast (net/netlink/af_netlink.c:1345)\n   netlink_sendmsg (net/netlink/af_netlink.c:1900)\n   __sock_sendmsg (net/socket.c:790)\n   ____sys_sendmsg (net/socket.c:2684)\n   ___sys_sendmsg (net/socket.c:2738)\n   __sys_sendmsg (net/socket.c:2770)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nSkip unset attributes, as ip_valid_fib_dump_req() does.","published":"2026-08-05T08:16:37.000Z","lastModified":"2026-08-19T17:20:17.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00171,"percentile":0.06427,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/03b5a2c29afc8e634924c75d6ee94140e70de88d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/06db79411a280707c7e4bf4b221ff4e664b51502","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/56d96fededd61192cd7cc8d2b0f36adfd59036c3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5f6e7b32bd1fbde10fd31a4143260735ea535b8a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bfc1cb5d6a8308e493e307f1c823d2107abc0a47","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e796ce9ef4356dc7cbbaa8373843f77852f2814d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64569","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}