CVE-2026-64404 Bluetooth: ISO: avoid NULL deref of conn in iso_conn_big_sync()

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/bluetooth/iso.c"
    ],
    "versions": [
      {
        "version": "cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5",
        "lessThan": "b3e647a4aa4d2d054f86a783f5c426035e1dc237",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7a17308c17880d259105f6e591eb1bc77b9612f0",
        "lessThan": "b84eeb7636d6962dd882d5e0b31475e4f404313c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7a17308c17880d259105f6e591eb1bc77b9612f0",
        "lessThan": "01afd198c2c286cd3b81f44d4e33a2e638711550",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7a17308c17880d259105f6e591eb1bc77b9612f0",
        "lessThan": "d5541eb148da72d5e0a1bca8ecd171f9fc8b366f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.12.6",
        "lessThan": "6.12.96",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/bluetooth/iso.c"
    ],
    "versions": [
      {
        "version": "6.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.13",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.96",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.39",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.4",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]