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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"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49000\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:15:17.821654Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:15:20.935Z\"}}], \"cna\": {\"title\": \"iommu/vt-d: Fix PCI device refcount leak in has_external_pci()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"89a6079df791aeace2044ea93be1b397195824ec\", \"lessThan\": \"10ed7655a17f6a3eaecd1293830488259ccd5723\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"89a6079df791aeace2044ea93be1b397195824ec\", \"lessThan\": \"b6eea8b2e858a20ad58ac62dc2de90fea2413f94\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"89a6079df791aeace2044ea93be1b397195824ec\", \"lessThan\": \"17f67414718e6aba123335a33b7d15aa594fff34\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"89a6079df791aeace2044ea93be1b397195824ec\", \"lessThan\": \"afca9e19cc720bfafc75dc5ce429c185ca93f31d\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/iommu/intel/iommu.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.158\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.82\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/iommu/intel/iommu.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723\"}, {\"url\": \"https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94\"}, {\"url\": \"https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34\"}, {\"url\": \"https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:12:11.796Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-49000\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:12:11.796Z\", \"dateReserved\": \"2024-08-22T01:27:53.642Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:06:14.753Z\", \"assignerShortName\": \"Linux\"}",
"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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