ext4: check stripe size compatibility on remount as well

{
  "id": "2386b563a4053bec096097734a41cd349ba280f442373362b3bd115b18982964",
  "url": "https://osv.dev/vulnerability/CVE-2024-47700",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ext4: check stripe size compatibility on remount as well",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ext4: check stripe size compatibility on remount as well We disable stripe size in __ext4_fill_super if it is not a multiple of the cluster ratio however this check is missed when trying to remount. This can leave us with cases where stripe < cluster_ratio after remount:set making EXT4_B2C(sbi->s_stripe) become 0 that can cause some unforeseen bugs like divide by 0. Fix that by adding the check in remount path as well.",
    "evidence": "osv:CVE-2024-47700",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.54",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.10.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.11.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-47700",
      "aliases": [
        "CVE-2024-47700"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "297615e992bbb30a55c158141086be6505d5d722"
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                {
                  "fixed": "a31b712f75445d52fc0451dc54fd7b16a552cb7c"
                },
                {
                  "fixed": "ee85e0938aa8f9846d21e4d302c3cf6a2a75110d"
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              ]
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-47700.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.5.0"
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                {
                  "fixed": "6.6.54"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.10.13"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.11.0"
                },
                {
                  "fixed": "6.11.2"
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              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-47700.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.746983194Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/297615e992bbb30a55c158141086be6505d5d722",
        "https://git.kernel.org/stable/c/a31b712f75445d52fc0451dc54fd7b16a552cb7c",
        "https://git.kernel.org/stable/c/ee85e0938aa8f9846d21e4d302c3cf6a2a75110d",
        "https://git.kernel.org/stable/c/faeff8b1ee2eaa5969c8e994d66c3337298cefed",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47700.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-47700",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47700.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-47700",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 521535,
  "published_at": "2024-10-21T11:53:36.611+00:00"
}