ghsa-pm9c-5p62-35cr
Vulnerability from github
Published
2024-12-24 12:30
Modified
2024-12-24 12:30
Details

In the Linux kernel, the following vulnerability has been resolved:

comedi: Flush partial mappings in error case

If some remap_pfn_range() calls succeeded before one failed, we still have buffer pages mapped into the userspace page tables when we drop the buffer reference with comedi_buf_map_put(bm). The userspace mappings are only cleaned up later in the mmap error path.

Fix it by explicitly flushing all mappings in our VMA on the error path.

See commit 79a61cc3fc04 ("mm: avoid leaving partial pfn mappings around in error case").

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{
  "affected": [],
  "aliases": [
    "CVE-2024-53148"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-24T12:15:22Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: Flush partial mappings in error case\n\nIf some remap_pfn_range() calls succeeded before one failed, we still have\nbuffer pages mapped into the userspace page tables when we drop the buffer\nreference with comedi_buf_map_put(bm). The userspace mappings are only\ncleaned up later in the mmap error path.\n\nFix it by explicitly flushing all mappings in our VMA on the error path.\n\nSee commit 79a61cc3fc04 (\"mm: avoid leaving partial pfn mappings around in\nerror case\").",
  "id": "GHSA-pm9c-5p62-35cr",
  "modified": "2024-12-24T12:30:42Z",
  "published": "2024-12-24T12:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53148"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16c507df509113c037cdc0ba642b9ab3389bd26c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/297f14fbb81895f4ccdb0ad25d196786d6461e00"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57f048c2d205b85e34282a9b0b0ae177e84c2f44"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8797b7712de704dc231f9e821d8eb3b9aeb3a032"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b07fb464eb69a752406e78e62ab3a60bfa7b00d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9322408d83accc8b96322bc7356593206288c56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6963a06ce5c61d3238751ada04ee1569663a828"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce8f9fb651fac95dd41f69afe54d935420b945bd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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