fkie_cve-2025-37845
Vulnerability from fkie_nvd
Published
2025-05-09 07:16
Modified
2025-05-12 17:32
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/626f01f4d26e8cf92e69c1df53036153c8e98a20
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/868df4eb784c3ccc7e4340a9ea993cbbedca167e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a27d2de2472b1cc7d582ab405d1d5832a80481de
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd941507a9486252d6fcf11814387666792020f3
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tracing: fprobe events: Fix possible UAF on modules. La confirmaci\u00f3n ac91052f0ae5 (\"tracing: tprobe-events: Fix leakage of module refcount\") traslad\u00f3 try_module_get() de __find_tracepoint_module_cb() al llamador de find_tracepoint(), pero esto introdujo un posible UAF porque el m\u00f3dulo puede descargarse antes que try_module_get(). En este caso, el objeto del m\u00f3dulo tambi\u00e9n deber\u00eda liberarse. Por lo tanto, try_module_get() no solo falla, sino que puede acceder al objeto liberado. Para evitarlo, vuelva a intentar try_module_get() en __find_tracepoint_module_cb()."
    }
  ],
  "id": "CVE-2025-37845",
  "lastModified": "2025-05-12T17:32:52.810",
  "metrics": {},
  "published": "2025-05-09T07:16:05.307",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/626f01f4d26e8cf92e69c1df53036153c8e98a20"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/868df4eb784c3ccc7e4340a9ea993cbbedca167e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a27d2de2472b1cc7d582ab405d1d5832a80481de"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dd941507a9486252d6fcf11814387666792020f3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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