ghsa-mjp6-8q33-2qx3
Vulnerability from github
Published
2025-05-09 09:33
Modified
2025-05-09 09:33
Details

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

tracing: fprobe events: Fix possible UAF on modules

Commit ac91052f0ae5 ("tracing: tprobe-events: Fix leakage of module refcount") moved try_module_get() from __find_tracepoint_module_cb() to find_tracepoint() caller, but that introduced a possible UAF because the module can be unloaded before try_module_get(). In this case, the module object should be freed too. Thus, try_module_get() does not only fail but may access to the freed object.

To avoid that, try_module_get() in __find_tracepoint_module_cb() again.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37845"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-09T07:16:05Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: fprobe events: Fix possible UAF on modules\n\nCommit ac91052f0ae5 (\"tracing: tprobe-events: Fix leakage of module\nrefcount\") moved try_module_get() from __find_tracepoint_module_cb()\nto find_tracepoint() caller, but that introduced a possible UAF\nbecause the module can be unloaded before try_module_get(). In this\ncase, the module object should be freed too. Thus, try_module_get()\ndoes not only fail but may access to the freed object.\n\nTo avoid that, try_module_get() in __find_tracepoint_module_cb()\nagain.",
  "id": "GHSA-mjp6-8q33-2qx3",
  "modified": "2025-05-09T09:33:19Z",
  "published": "2025-05-09T09:33:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37845"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/626f01f4d26e8cf92e69c1df53036153c8e98a20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/868df4eb784c3ccc7e4340a9ea993cbbedca167e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a27d2de2472b1cc7d582ab405d1d5832a80481de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd941507a9486252d6fcf11814387666792020f3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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