ghsa-9x8p-g64x-m5j5
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:

bpf: Fix deadlock between rcu_tasks_trace and event_mutex.

Fix the following deadlock: CPU A _free_event() perf_kprobe_destroy() mutex_lock(&event_mutex) perf_trace_event_unreg() synchronize_rcu_tasks_trace()

There are several paths where _free_event() grabs event_mutex and calls sync_rcu_tasks_trace. Above is one such case.

CPU B bpf_prog_test_run_syscall() rcu_read_lock_trace() bpf_prog_run_pin_on_cpu() bpf_prog_load() bpf_tracing_func_proto() trace_set_clr_event() mutex_lock(&event_mutex)

Delegate trace_set_clr_event() to workqueue to avoid such lock dependency.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37884"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-09T07:16:09Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix deadlock between rcu_tasks_trace and event_mutex.\n\nFix the following deadlock:\nCPU A\n_free_event()\n  perf_kprobe_destroy()\n    mutex_lock(\u0026event_mutex)\n      perf_trace_event_unreg()\n        synchronize_rcu_tasks_trace()\n\nThere are several paths where _free_event() grabs event_mutex\nand calls sync_rcu_tasks_trace. Above is one such case.\n\nCPU B\nbpf_prog_test_run_syscall()\n  rcu_read_lock_trace()\n    bpf_prog_run_pin_on_cpu()\n      bpf_prog_load()\n        bpf_tracing_func_proto()\n          trace_set_clr_event()\n            mutex_lock(\u0026event_mutex)\n\nDelegate trace_set_clr_event() to workqueue to avoid\nsuch lock dependency.",
  "id": "GHSA-9x8p-g64x-m5j5",
  "modified": "2025-05-09T09:33:20Z",
  "published": "2025-05-09T09:33:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37884"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/255cbc9db7067a83713fd2f4b31034ddd266549a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45286680b385f2592db3003554872388dee66d68"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4580f4e0ebdf8dc8d506ae926b88510395a0c1d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5a528a34e1f613565115a7a6016862ccbfcb9ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5c833f6375f8ecf9254dd27946c927c7d645421"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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