CVE-2026-89778 isofs: fix out-of-bounds page array access on empty zisofs block

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/isofs/compress.c"
    ],
    "versions": [
      {
        "version": "59bc055211b8d266ab6089158058bf8268e02006",
        "lessThan": "8b994ac5778a725982fd6a8a3afcaa068d4a93e3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "59bc055211b8d266ab6089158058bf8268e02006",
        "lessThan": "ad3249cdf9d4ba34bb8b1ff3956a4020fdfb5b0a",
        "status": "affected",
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      },
      {
        "version": "59bc055211b8d266ab6089158058bf8268e02006",
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      },
      {
        "version": "59bc055211b8d266ab6089158058bf8268e02006",
        "lessThan": "f03425dcbe04aec3c27b9917e97d7d23a2908dda",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "59bc055211b8d266ab6089158058bf8268e02006",
        "lessThan": "cd616aa0449a772a6956abf03358f0ff31720580",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "59bc055211b8d266ab6089158058bf8268e02006",
        "lessThan": "9c6eace8d07e90f038c89eb3b756d65a7e259d48",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "59bc055211b8d266ab6089158058bf8268e02006",
        "lessThan": "68d4d3e78150c7ed7d1195af63ad1e6ace30c661",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/isofs/compress.c"
    ],
    "versions": [
      {
        "version": "2.6.33",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.33",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.221",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.188",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.157",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.110",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.52",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.6",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]