ghsa-383j-f5vg-3hcm
Vulnerability from github
Published
2024-10-21 12:30
Modified
2024-10-23 21:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-47700"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-369"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T12:15:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: check stripe size compatibility on remount as well\n\nWe disable stripe size in __ext4_fill_super if it is not a multiple of\nthe cluster ratio however this check is missed when trying to remount.\nThis can leave us with cases where stripe \u003c cluster_ratio after\nremount:set making EXT4_B2C(sbi-\u003es_stripe) become 0 that can cause some\nunforeseen bugs like divide by 0.\n\nFix that by adding the check in remount path as well.",
  "id": "GHSA-383j-f5vg-3hcm",
  "modified": "2024-10-23T21:30:28Z",
  "published": "2024-10-21T12:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47700"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/297615e992bbb30a55c158141086be6505d5d722"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a31b712f75445d52fc0451dc54fd7b16a552cb7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee85e0938aa8f9846d21e4d302c3cf6a2a75110d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/faeff8b1ee2eaa5969c8e994d66c3337298cefed"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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