Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.19, < 6.1.142 |
| Debian | Debian Linux | 11.0 |
References
- https://git.kernel.org/stable/c/2d834477bbc1e8b8a59ff8b0c081529d6bed7b22Patch
- https://git.kernel.org/stable/c/2f8c69a72e8ad87b36b8052f789da3cc2b2e186cPatch
- https://git.kernel.org/stable/c/7bf4461f1c97207fda757014690d55a447ce859fPatch
- https://git.kernel.org/stable/c/b522d4d334f206284b1a44b0b0b2f99fd443b39bPatch
- https://git.kernel.org/stable/c/d4965578267e2e81f67c86e2608481e77e9c8569Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2025-38202?
CVE-2025-38202 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 sl...
How severe is CVE-2025-38202?
CVE-2025-38202 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-38202?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.