GHSA-2HWQ-42HC-RHQV

Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2026-06-01 18:31
VLAI?
Details

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

net: usb: lan78xx: Fix double free issue with interrupt buffer allocation

In lan78xx_probe(), the buffer buf was being freed twice: once implicitly through usb_free_urb(dev->urb_intr) with the URB_FREE_BUFFER flag and again explicitly by kfree(buf). This caused a double free issue.

To resolve this, reordered kmalloc() and usb_alloc_urb() calls to simplify the initialization sequence and removed the redundant kfree(buf). Now, buf is allocated after usb_alloc_urb(), ensuring it is correctly managed by usb_fill_int_urb() and freed by usb_free_urb() as intended.

Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-53213"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T14:15:29Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: lan78xx: Fix double free issue with interrupt buffer allocation\n\nIn lan78xx_probe(), the buffer `buf` was being freed twice: once\nimplicitly through `usb_free_urb(dev-\u003eurb_intr)` with the\n`URB_FREE_BUFFER` flag and again explicitly by `kfree(buf)`. This caused\na double free issue.\n\nTo resolve this, reordered `kmalloc()` and `usb_alloc_urb()` calls to\nsimplify the initialization sequence and removed the redundant\n`kfree(buf)`.  Now, `buf` is allocated after `usb_alloc_urb()`, ensuring\nit is correctly managed by  `usb_fill_int_urb()` and freed by\n`usb_free_urb()` as intended.",
  "id": "GHSA-2hwq-42hc-rhqv",
  "modified": "2026-06-01T18:31:19Z",
  "published": "2024-12-27T15:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53213"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03819abbeb11117dcbba40bfe322b88c0c88a6b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2970ef2fce90c661952ec2b451b0276d5f8d6180"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ac9f3c981eeceee2ec4d30d850f4a6f50a1ec40"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/977128343fc2a30737399b58df8ea77e94f164bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a422ebec863d99d5607fb41bb7af3347fcb436d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b09512aea6223eec756f52aa584fc29eeab57480"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc5aa8e3ad69dcedeba79e667d4a2efb72a305af"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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