# CVE-2025-38202: bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem()

Status: published. Published: 2025-07-04. Updated: 2026-11-05.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ 07343110b293456d30393e89b86c4dee1ac051c8; < 2f8c69a72e8ad87b36b8052f789da3cc2b2e186c (affected, git); ≥ 07343110b293456d30393e89b86c4dee1ac051c8; < 7bf4461f1c97207fda757014690d55a447ce859f (affected, git); ≥ 07343110b293456d30393e89b86c4dee1ac051c8; < 2d834477bbc1e8b8a59ff8b0c081529d6bed7b22 (affected, git); ≥ 07343110b293456d30393e89b86c4dee1ac051c8; < b522d4d334f206284b1a44b0b0b2f99fd443b39b (affected, git); ≥ 07343110b293456d30393e89b86c4dee1ac051c8; < d4965578267e2e81f67c86e2608481e77e9c8569 (affected, git). Source: CNA: Linux
- Linux / Linux: 5.19 (affected); ≥ 0; < 5.19 (unaffected, semver); ≥ 6.1.142; ≤ 6.1.* (unaffected, semver); ≥ 6.6.95; ≤ 6.6.* (unaffected, semver); ≥ 6.12.35; ≤ 6.12.* (unaffected, semver); ≥ 6.15.4; ≤ 6.15.* (unaffected, semver); ≥ 6.16; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-05; percentile 7.63%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/2f8c69a72e8ad87b36b8052f789da3cc2b2e186c (CNA: Linux)

- https://git.kernel.org/stable/c/7bf4461f1c97207fda757014690d55a447ce859f (CNA: Linux)

- https://git.kernel.org/stable/c/2d834477bbc1e8b8a59ff8b0c081529d6bed7b22 (CNA: Linux)

- https://git.kernel.org/stable/c/b522d4d334f206284b1a44b0b0b2f99fd443b39b (CNA: Linux)

- https://git.kernel.org/stable/c/d4965578267e2e81f67c86e2608481e77e9c8569 (CNA: Linux)

- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (ADP: CVE)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2025-38202; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2025-38202; retrieved 2026-11-05; source updated Not reported

Revision: 9c2a1e03fdba224c667e79f1630e213b764f92c79b4de161546016f9184577d2

Canonical: https://y2.dev/cve/CVE-2025-38202

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Collected public records only. Check source status for coverage and freshness.