CVE-2026-64226 sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/sched/ext.c"
    ],
    "versions": [
      {
        "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
        "lessThan": "cf396941901858b0de426cdcd3974eea6a02c98c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
        "lessThan": "45c7c4e3db8b700307313c035ea08be829a7f21b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
        "lessThan": "57e19ba3f58a67eb924022a5a60b67fd08e5cbbd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
        "lessThan": "9a415cc53711f2238e0f0ca8a6bcc796c003b127",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/sched/ext.c"
    ],
    "versions": [
      {
        "version": "6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.92",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.34",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]