{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64569",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-64569"
  ],
  "published": "2026-08-05T08:08:08Z",
  "summary": "mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n",
  "details": "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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.183",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64569"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bfc1cb5d6a8308e493e307f1c823d2107abc0a47"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/03b5a2c29afc8e634924c75d6ee94140e70de88d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e796ce9ef4356dc7cbbaa8373843f77852f2814d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5f6e7b32bd1fbde10fd31a4143260735ea535b8a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/06db79411a280707c7e4bf4b221ff4e664b51502"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/56d96fededd61192cd7cc8d2b0f36adfd59036c3"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-19T16:47:12Z"
  }
}