CVE-2026-68141 net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/iucv/af_iucv.c"
    ],
    "versions": [
      {
        "version": "3881ac441f642d56503818123446f7298442236b",
        "lessThan": "8bb111f87ded6acb9837ec9b45d6f02cda94c51f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3881ac441f642d56503818123446f7298442236b",
        "lessThan": "46453b16f38ec7147351f7447e2aec6ea330f7b3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3881ac441f642d56503818123446f7298442236b",
        "lessThan": "33736ff5e7c97d3348ce812e8bd2e125d840743c",
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      },
      {
        "version": "3881ac441f642d56503818123446f7298442236b",
        "lessThan": "0e857185591fe79934427c9c0c1c31dc776be134",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3881ac441f642d56503818123446f7298442236b",
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      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/iucv/af_iucv.c"
    ],
    "versions": [
      {
        "version": "3.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.2",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.148",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.101",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.42",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.6",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc5",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]