ghsa-jq6v-72pf-8j24
Vulnerability from github
Published
2024-05-21 15:31
Modified
2024-12-26 21:30
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

mcb: fix error handling in mcb_alloc_bus()

There are two bugs: 1) If ida_simple_get() fails then this code calls put_device(carrier) but we haven't yet called get_device(carrier) and probably that leads to a use after free. 2) After device_initialize() then we need to use put_device() to release the bus. This will free the internal resources tied to the device and call mcb_free_bus() which will free the rest.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47361"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:22Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmcb: fix error handling in mcb_alloc_bus()\n\nThere are two bugs:\n1) If ida_simple_get() fails then this code calls put_device(carrier)\n   but we haven\u0027t yet called get_device(carrier) and probably that\n   leads to a use after free.\n2) After device_initialize() then we need to use put_device() to\n   release the bus.  This will free the internal resources tied to the\n   device and call mcb_free_bus() which will free the rest.",
  "id": "GHSA-jq6v-72pf-8j24",
  "modified": "2024-12-26T21:30:36Z",
  "published": "2024-05-21T15:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47361"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499"
    }
  ],
  "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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