ghsa-9q42-qq54-fwvj
Vulnerability from github
Published
2025-02-27 03:34
Modified
2025-03-05 21:32
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:

iommu: Fix potential memory leak in iopf_queue_remove_device()

The iopf_queue_remove_device() helper removes a device from the per-iommu iopf queue when PRI is disabled on the device. It responds to all outstanding iopf's with an IOMMU_PAGE_RESP_INVALID code and detaches the device from the queue.

However, it fails to release the group structure that represents a group of iopf's awaiting for a response after responding to the hardware. This can cause a memory leak if iopf_queue_remove_device() is called with pending iopf's.

Fix it by calling iopf_free_group() after the iopf group is responded.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-21770"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T03:15:17Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Fix potential memory leak in iopf_queue_remove_device()\n\nThe iopf_queue_remove_device() helper removes a device from the per-iommu\niopf queue when PRI is disabled on the device. It responds to all\noutstanding iopf\u0027s with an IOMMU_PAGE_RESP_INVALID code and detaches the\ndevice from the queue.\n\nHowever, it fails to release the group structure that represents a group\nof iopf\u0027s awaiting for a response after responding to the hardware. This\ncan cause a memory leak if iopf_queue_remove_device() is called with\npending iopf\u0027s.\n\nFix it by calling iopf_free_group() after the iopf group is responded.",
  "id": "GHSA-9q42-qq54-fwvj",
  "modified": "2025-03-05T21:32:06Z",
  "published": "2025-02-27T03:34:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21770"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90d5429cd2921ca2714684ed525898d431bb9283"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9759ae2cee7cd42b95f1c48aa3749bd02b5ddb08"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db60d2d896a17decd58d143eef92cf22eb0a0176"
    }
  ],
  "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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