ghsa-g92r-8x2f-9v8m
Vulnerability from github
Published
2024-08-07 18:30
Modified
2024-08-08 15:31
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:

mmc: sdhci: Fix max_seg_size for 64KiB PAGE_SIZE

blk_queue_max_segment_size() ensured:

if (max_size < PAGE_SIZE)
    max_size = PAGE_SIZE;

whereas:

blk_validate_limits() makes it an error:

if (WARN_ON_ONCE(lim->max_segment_size < PAGE_SIZE))
    return -EINVAL;

The change from one to the other, exposed sdhci which was setting maximum segment size too low in some circumstances.

Fix the maximum segment size when it is too low.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2024-42242"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-07T16:15:47Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: sdhci: Fix max_seg_size for 64KiB PAGE_SIZE\n\nblk_queue_max_segment_size() ensured:\n\n\tif (max_size \u003c PAGE_SIZE)\n\t\tmax_size = PAGE_SIZE;\n\nwhereas:\n\nblk_validate_limits() makes it an error:\n\n\tif (WARN_ON_ONCE(lim-\u003emax_segment_size \u003c PAGE_SIZE))\n\t\treturn -EINVAL;\n\nThe change from one to the other, exposed sdhci which was setting maximum\nsegment size too low in some circumstances.\n\nFix the maximum segment size when it is too low.",
  "id": "GHSA-g92r-8x2f-9v8m",
  "modified": "2024-08-08T15:31:29Z",
  "published": "2024-08-07T18:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42242"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63d20a94f24fc1cbaf44d0e7c0e0a8077fde0aef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf78b1accef46efd9b624967cb74ae8d3c215a2b"
    }
  ],
  "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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