CVE-2022-50494 (GCVE-0-2022-50494)
Vulnerability from cvelistv5 – Published: 2025-10-04 15:43 – Updated: 2026-05-11 19:20
VLAI
EPSS
VEX
Title
thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
Summary
In the Linux kernel, the following vulnerability has been resolved:
thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
When CPU 0 is offline and intel_powerclamp is used to inject
idle, it generates kernel BUG:
BUG: using smp_processor_id() in preemptible [00000000] code: bash/15687
caller is debug_smp_processor_id+0x17/0x20
CPU: 4 PID: 15687 Comm: bash Not tainted 5.19.0-rc7+ #57
Call Trace:
<TASK>
dump_stack_lvl+0x49/0x63
dump_stack+0x10/0x16
check_preemption_disabled+0xdd/0xe0
debug_smp_processor_id+0x17/0x20
powerclamp_set_cur_state+0x7f/0xf9 [intel_powerclamp]
...
...
Here CPU 0 is the control CPU by default and changed to the current CPU,
if CPU 0 offlined. This check has to be performed under cpus_read_lock(),
hence the above warning.
Use get_cpu() instead of smp_processor_id() to avoid this BUG.
[ rjw: Subject edits ]
Severity
5.5 (Medium)
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 3e799e815097febbcb81b472285be824f5d089f9
(git)
Affected: d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 0f91f66c568b316b19cb042cf50584467b3bdff4 (git) Affected: d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 6904727db0eb62fb0c2dce1cf331c341d97ee4b7 (git) Affected: d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 5a646c38f648185ee2c62f2a19da3c6f04e27612 (git) Affected: d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 513943bf879d45005213e6f5cfb7d9e9943f589f (git) Affected: d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 5614908434451aafbf9b24cb5247cf1d21269f76 (git) Affected: d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 6e2a347b304224b2aeb1c0ea000d1cf8a02cc592 (git) Affected: d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 418fae0700e85a498062424f8656435c32cdb200 (git) Affected: d6d71ee4a14ae602db343ec48c491851d7ec5267 , < 68b99e94a4a2db6ba9b31fe0485e057b9354a640 (git) |
guessed | |
| Linux | Linux |
Affected:
3.9
Unaffected: 0 , < 3.9 (semver) Unaffected: 4.9.331 , ≤ 4.9.* (semver) Unaffected: 4.14.296 , ≤ 4.14.* (semver) Unaffected: 4.19.262 , ≤ 4.19.* (semver) Unaffected: 5.4.220 , ≤ 5.4.* (semver) Unaffected: 5.10.150 , ≤ 5.10.* (semver) Unaffected: 5.15.75 , ≤ 5.15.* (semver) Unaffected: 5.19.17 , ≤ 5.19.* (semver) Unaffected: 6.0.3 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix) |
guessed |
{
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"drivers/thermal/intel/intel_powerclamp.c"
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},
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},
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}
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},
{
"url": "https://git.kernel.org/stable/c/68b99e94a4a2db6ba9b31fe0485e057b9354a640"
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This check has to be performed under cpus_read_lock(),\\nhence the above warning.\\n\\nUse get_cpu() instead of smp_processor_id() to avoid this BUG.\\n\\n[ rjw: Subject edits 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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-10T15:18:15+00:00",
"cve": "CVE-2022-50494",
"id": "CVE-2022-50494",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_affected": "156",
"product_status:known_not_affected": "118",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50494.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T16:50:42Z",
"cve": "CVE-2022-50494",
"id": "CVE-2022-50494",
"initial_release_date": "2025-10-07T01:22:19Z",
"product_status:known_affected": "501",
"product_status:known_not_affected": "179",
"product_status:recommended": "325",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-50494",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50494.json",
"version": "48"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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