GHSA-PM9C-5P62-35CR

Vulnerability from github – Published: 2024-12-24 12:30 – Updated: 2025-11-03 21:31
VLAI?
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").

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "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": "MODERATE"
  },
  "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": "2025-11-03T21:31:45Z",
  "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"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "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"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.