CVE-2026-46188 octeon_ep_vf: add NULL check for napi_build_skb()

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.c"
    ],
    "versions": [
      {
        "version": "1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1",
        "lessThan": "60246cdd4c515ea7d920cddf48932efcb990773e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1",
        "lessThan": "b0f4711b426a06fb4c4be85c36b9f5588d5140d3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1",
        "lessThan": "6fef6640bbf360e254cc0174365ed30ce3a07572",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1",
        "lessThan": "dd66b42854705e4e4ee7f14d260f86c578bed3e3",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.c"
    ],
    "versions": [
      {
        "version": "6.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.9",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.88",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.30",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.7",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]