CVE-2025-38202
Full vulnerability record from the local CVENow database.
Description
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.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-07-04 14:15:28.117000
Last modified
2026-11-05 21:18:21.423000
View original CVE JSON
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"published": "2025-07-04T14:15:28.117",
"lastModified": "2026-11-05T21:18:21.423",
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"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 comprobación de rcu_read_lock_trace_held() en bpf_map_lookup_percpu_elem() también está disponible para programas bpf en suspensión. Cuando BPF JIT está deshabilitado o en un host de 32 bits, bpf_map_lookup_percpu_elem() no se incluirá en línea. Su uso en un programa bpf en suspensión activará 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 comprobación omitida."
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