CVE-2026-31463 iomap: fix invalid folio access when i_blkbits differs from I/O granularity

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/iomap/buffered-io.c"
    ],
    "versions": [
      {
        "version": "b2f35ac4146d32d4424aaa941bbc681f12c1b9e6",
        "lessThan": "4a927f670cdb0def226f9f85f42a9f19d9e09c88",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b2f35ac4146d32d4424aaa941bbc681f12c1b9e6",
        "lessThan": "bd71fb3fea9945987053968f028a948997cba8cc",
        "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/iomap/buffered-io.c"
    ],
    "versions": [
      {
        "version": "6.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.19",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.11",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]