CVE-2021-47501 i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/intel/i40e/i40e_debugfs.c"
    ],
    "versions": [
      {
        "version": "02e9c290814cc143ceccecb14eac3e7a05da745e",
        "lessThan": "e5b7fb2198abc50058f1a29c395b004f76ab1c83",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "02e9c290814cc143ceccecb14eac3e7a05da745e",
        "lessThan": "16431e442db248ecd8aa9457cf0a656f1885f56e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "02e9c290814cc143ceccecb14eac3e7a05da745e",
        "lessThan": "23ec111bf3549aae37140330c31a16abfc172421",
        "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/intel/i40e/i40e_debugfs.c"
    ],
    "versions": [
      {
        "version": "3.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.85",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.8",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]