bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem()
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 6.1.142, 6.12.35, 6.15.4, 6.6.95
- CVEs
- CVE-2025-38202
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 16:36 UTC · Revision 1
Source evidence
bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem()
core-osv · Original sourcePublished 4 Jul 2025, 13:37 UTC
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.
osv:CVE-2025-38202
Kernel
Fixed versions: 6.1.142, 6.6.95, 6.12.35, 6.15.4
Complete source record
{
"id": "fff205d76be94c7a3d5f98c078ca7536c3d2beaa1d96cb725b1cc848a25eb529",
"url": "https://osv.dev/vulnerability/CVE-2025-38202",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem()",
"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.",
"evidence": "osv:CVE-2025-38202",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
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"prerequisites": [],
"fixed_versions": [
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"value": "6.1.142",
"evidence": "/affected/1/ranges"
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{
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"evidence": "/affected/1/ranges"
},
{
"value": "6.12.35",
"evidence": "/affected/1/ranges"
},
{
"value": "6.15.4",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2025-38202",
"aliases": [
"CVE-2025-38202"
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"affected": [
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"type": "GIT",
"events": [
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{
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"type": "ECOSYSTEM",
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{
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{
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{
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{
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{
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"package": {
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38202.json"
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],
"modified": "2026-10-28T02:30:30.809385382Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/2d834477bbc1e8b8a59ff8b0c081529d6bed7b22",
"https://git.kernel.org/stable/c/2f8c69a72e8ad87b36b8052f789da3cc2b2e186c",
"https://git.kernel.org/stable/c/7bf4461f1c97207fda757014690d55a447ce859f",
"https://git.kernel.org/stable/c/b522d4d334f206284b1a44b0b0b2f99fd443b39b",
"https://git.kernel.org/stable/c/d4965578267e2e81f67c86e2608481e77e9c8569",
"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38202.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-38202",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38202.json"
}
},
"related_cves": [
{
"value": "CVE-2025-38202",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 497428,
"published_at": "2025-07-04T13:37:23.347+00:00"
}