CVE-2025-37845 (GCVE-0-2025-37845)
Vulnerability from cvelistv5
Published
2025-05-09 06:41
Modified
2025-05-26 05:22
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
Impacted products
Vendor Product Version
Linux Linux Version: 71c9cf87776eaa556fc0a0a060df94200e1f521c
Version: 9db2b8cf4ea07b579db588e0353d5680f5d1f071
Version: ac91052f0ae5be9e46211ba92cc31c0e3b0a933a
Version: ac91052f0ae5be9e46211ba92cc31c0e3b0a933a
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "kernel/trace/trace_fprobe.c"
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          "vendor": "Linux",
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          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.24",
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              "lessThanOrEqual": "6.13.*",
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              "version": "6.13.12",
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                  "versionStartIncluding": "6.12.21",
                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:22:09.545Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/868df4eb784c3ccc7e4340a9ea993cbbedca167e"
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          "url": "https://git.kernel.org/stable/c/a27d2de2472b1cc7d582ab405d1d5832a80481de"
        },
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          "url": "https://git.kernel.org/stable/c/626f01f4d26e8cf92e69c1df53036153c8e98a20"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd941507a9486252d6fcf11814387666792020f3"
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      ],
      "title": "tracing: fprobe events: Fix possible UAF on modules",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37845",
    "datePublished": "2025-05-09T06:41:54.022Z",
    "dateReserved": "2025-04-16T04:51:23.953Z",
    "dateUpdated": "2025-05-26T05:22:09.545Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37845\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-09T07:16:05.307\",\"lastModified\":\"2025-05-12T17:32:52.810\",\"vulnStatus\":\"Awaiting Analysis\",\"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().\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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