CVE-2026-19577 Out-of-bounds read in IPv6 route forwarding when the nexthop neighbor has no link-layer address

[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "programFiles": [
      "subsys/net/ip/route.c",
      "subsys/net/ip/route_ipv6.c"
    ],
    "programRoutines": [
      {
        "name": "net_route_ipv6_packet"
      },
      {
        "name": "net_route_packet"
      }
    ],
    "versions": [
      {
        "version": "1.8.0",
        "status": "affected",
        "lessThan": "4.5.0",
        "versionType": "semver"
      }
    ]
  }
]