ghsa-5pw6-3f3h-ph3w
Vulnerability from github
Published
2025-03-14 00:30
Modified
2025-03-14 00:30
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:

NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify()

[You don't often get email from xiongx18@fudan.edu.cn. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.]

The reference counting issue happens in two error paths in the function _nfs42_proc_copy_notify(). In both error paths, the function simply returns the error code and forgets to balance the refcount of object ctx, bumped by get_nfs_open_context() earlier, which may cause refcount leaks.

Fix it by balancing refcount of the ctx object before the function returns in both error paths.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49103"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:47Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify()\n\n[You don\u0027t often get email from xiongx18@fudan.edu.cn. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.]\n\nThe reference counting issue happens in two error paths in the\nfunction _nfs42_proc_copy_notify(). In both error paths, the function\nsimply returns the error code and forgets to balance the refcount of\nobject `ctx`, bumped by get_nfs_open_context() earlier, which may\ncause refcount leaks.\n\nFix it by balancing refcount of the `ctx` object before the function\nreturns in both error paths.",
  "id": "GHSA-5pw6-3f3h-ph3w",
  "modified": "2025-03-14T00:30:48Z",
  "published": "2025-03-14T00:30:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49103"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b9feec97c1fc7dd9bb69f62c4905cddf1801599"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b37f482ba9f0e6382c188e3fccf6c4b2fdc938eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7f114edd54326f730a754547e7cfb197b5bc132"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f46f632f9cfae4b2e3635fa58840a8ec584c42e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb73bf6305f4eb8f0cf9a61ee874d55f019d6dc4"
    }
  ],
  "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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