fkie_cve-2025-38202
Vulnerability from fkie_nvd
Published
2025-07-04 14:15
Modified
2025-07-08 16:18
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem() bpf_map_lookup_percpu_elem() helper is also available for sleepable bpf program. When BPF JIT is disabled or under 32-bit host, bpf_map_lookup_percpu_elem() will not be inlined. Using it in a sleepable bpf program will trigger the warning in bpf_map_lookup_percpu_elem(), because the bpf program only holds rcu_read_lock_trace lock. Therefore, add the missed check.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2d834477bbc1e8b8a59ff8b0c081529d6bed7b22
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f8c69a72e8ad87b36b8052f789da3cc2b2e186c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7bf4461f1c97207fda757014690d55a447ce859f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b522d4d334f206284b1a44b0b0b2f99fd443b39b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d4965578267e2e81f67c86e2608481e77e9c8569
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\nbpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem()\n\nbpf_map_lookup_percpu_elem() helper is also available for sleepable bpf\nprogram. When BPF JIT is disabled or under 32-bit host,\nbpf_map_lookup_percpu_elem() will not be inlined. Using it in a\nsleepable bpf program will trigger the warning in\nbpf_map_lookup_percpu_elem(), because the bpf program only holds\nrcu_read_lock_trace lock. Therefore, add the missed check."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: La comprobaci\u00f3n de rcu_read_lock_trace_held() en bpf_map_lookup_percpu_elem() tambi\u00e9n est\u00e1 disponible para programas bpf en suspensi\u00f3n. Cuando BPF JIT est\u00e1 deshabilitado o en un host de 32 bits, bpf_map_lookup_percpu_elem() no se incluir\u00e1 en l\u00ednea. Su uso en un programa bpf en suspensi\u00f3n activar\u00e1 la advertencia en bpf_map_lookup_percpu_elem(), ya que el programa bpf solo mantiene el bloqueo rcu_read_lock_trace. Por lo tanto, se debe agregar la comprobaci\u00f3n omitida."
    }
  ],
  "id": "CVE-2025-38202",
  "lastModified": "2025-07-08T16:18:53.607",
  "metrics": {},
  "published": "2025-07-04T14:15:28.117",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2d834477bbc1e8b8a59ff8b0c081529d6bed7b22"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2f8c69a72e8ad87b36b8052f789da3cc2b2e186c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7bf4461f1c97207fda757014690d55a447ce859f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b522d4d334f206284b1a44b0b0b2f99fd443b39b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d4965578267e2e81f67c86e2608481e77e9c8569"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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