CVE-2026-53240 xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/xfrm/xfrm_iptfs.c"
    ],
    "versions": [
      {
        "version": "3f3339885fb343b7b42d7c34717108ce07da24ae",
        "lessThan": "8d9a79fbf5172d9c4c0146057af2360913265a11",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3f3339885fb343b7b42d7c34717108ce07da24ae",
        "lessThan": "ff2ee35b6ce5fa8a8e24ea50b15733d5c8780198",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3f3339885fb343b7b42d7c34717108ce07da24ae",
        "lessThan": "eb48730bb827d1550401a5d391903f9d90b493c8",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/xfrm/xfrm_iptfs.c"
    ],
    "versions": [
      {
        "version": "6.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.36",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.13",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]