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.

Classification

CVE ID: CVE-2025-38202

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 2.9% (scored less or equal to compared to others)

EPSS Date: 2025-07-06 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-38202
https://git.kernel.org/stable/c/2f8c69a72e8ad87b36b8052f789da3cc2b2e186c
https://git.kernel.org/stable/c/7bf4461f1c97207fda757014690d55a447ce859f
https://git.kernel.org/stable/c/2d834477bbc1e8b8a59ff8b0c081529d6bed7b22
https://git.kernel.org/stable/c/b522d4d334f206284b1a44b0b0b2f99fd443b39b
https://git.kernel.org/stable/c/d4965578267e2e81f67c86e2608481e77e9c8569

Timeline