CVE-2022-49000 (GCVE-0-2022-49000)
Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-05-11 18:51
VLAI
EPSS
VEX
Title
iommu/vt-d: Fix PCI device refcount leak in has_external_pci()
Summary
In the Linux kernel, the following vulnerability has been resolved:
iommu/vt-d: Fix PCI device refcount leak in has_external_pci()
for_each_pci_dev() is implemented by pci_get_device(). The comment of
pci_get_device() says that it will increase the reference count for the
returned pci_dev and also decrease the reference count for the input
pci_dev @from if it is not NULL.
If we break for_each_pci_dev() loop with pdev not NULL, we need to call
pci_dev_put() to decrease the reference count. Add the missing
pci_dev_put() before 'return true' to avoid reference count leak.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:15 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
89a6079df791aeace2044ea93be1b397195824ec , < 10ed7655a17f6a3eaecd1293830488259ccd5723
(git)
Affected: 89a6079df791aeace2044ea93be1b397195824ec , < b6eea8b2e858a20ad58ac62dc2de90fea2413f94 (git) Affected: 89a6079df791aeace2044ea93be1b397195824ec , < 17f67414718e6aba123335a33b7d15aa594fff34 (git) Affected: 89a6079df791aeace2044ea93be1b397195824ec , < afca9e19cc720bfafc75dc5ce429c185ca93f31d (git) |
guessed | |
| Linux | Linux |
Affected:
5.0
Unaffected: 0 , < 5.0 (semver) Unaffected: 5.10.158 , ≤ 5.10.* (semver) Unaffected: 5.15.82 , ≤ 5.15.* (semver) Unaffected: 6.0.12 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix) |
guessed |
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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],
"url": "https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94"
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
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],
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},
"redhat_vex": {
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"current_release_date": "2025-11-21T13:51:44+00:00",
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"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_affected": "28",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: iommu/vt-d: Fix PCI device refcount leak in has_external_pci()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49000.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-02T02:06:20Z",
"cve": "CVE-2022-49000",
"id": "CVE-2022-49000",
"initial_release_date": "2024-10-22T14:22:34Z",
"product_status:known_affected": "445",
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"product_status:recommended": "420",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-49000",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49000.json",
"version": "57"
},
"vulnrichment": {
"containers": {
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"metrics": [
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"options": [
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},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-22T13:15:17.821654Z",
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],
"cna": {
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"product": "Linux",
"programFiles": [
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"version": "5.0"
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"version": "6.1",
"versionType": "original_commit_for_fix"
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Fix PCI device refcount leak in has_external_pci()\n\nfor_each_pci_dev() is implemented by pci_get_device(). The comment of\npci_get_device() says that it will increase the reference count for the\nreturned pci_dev and also decrease the reference count for the input\npci_dev @from if it is not NULL.\n\nIf we break for_each_pci_dev() loop with pdev not NULL, we need to call\npci_dev_put() to decrease the reference count. Add the missing\npci_dev_put() before \u0027return true\u0027 to avoid reference count leak."
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"references": [
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"url": "https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94"
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"url": "https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d"
}
],
"title": "iommu/vt-d: Fix PCI device refcount leak in has_external_pci()",
"x_generator": {
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},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2022-49000",
"datePublished": "2024-10-21T20:06:14.753Z",
"dateReserved": "2024-08-22T01:27:53.642Z",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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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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