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CVE-2022-49002 (GCVE-0-2022-49002)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-05-11 18:51
VLAI
Title
iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init() 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() for the error path 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
Vendor Product Version CPE status
Linux Linux Affected: 2e45528930388658603ea24d49cf52867b928d3e , < d47bc9d7bcdbb9adc9703513d964b514fee5b0bf (git)
Affected: 2e45528930388658603ea24d49cf52867b928d3e , < 71c4a621985fc051ab86d3a86c749069a993fcb2 (git)
Affected: 2e45528930388658603ea24d49cf52867b928d3e , < 876d7bfb89273997056220029ff12b1c2cc4691d (git)
Affected: 2e45528930388658603ea24d49cf52867b928d3e , < cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f (git)
Affected: 2e45528930388658603ea24d49cf52867b928d3e , < a5c65cd56aed027f8a97fda8b691caaeb66d115e (git)
Affected: 2e45528930388658603ea24d49cf52867b928d3e , < bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7 (git)
Affected: 2e45528930388658603ea24d49cf52867b928d3e , < 2a8f7b90681472948de172dbbf5a54cd342870aa (git)
Affected: 2e45528930388658603ea24d49cf52867b928d3e , < 4bedbbd782ebbe7287231fea862c158d4f08a9e3 (git)
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Linux Linux Affected: 3.15
Unaffected: 0 , < 3.15 (semver)
Unaffected: 4.9.335 , ≤ 4.9.* (semver)
Unaffected: 4.14.301 , ≤ 4.14.* (semver)
Unaffected: 4.19.268 , ≤ 4.19.* (semver)
Unaffected: 5.4.226 , ≤ 5.4.* (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 Create a notification for this product.
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                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
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              "impactScore": 3.6,
              "source": "nvd@nist.gov",
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              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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                "options": [
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                  },
                  {
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                  },
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                ],
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      "current_release_date": "2025-11-21T13:51:46+00:00",
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      "product_status:known_affected": "28",
      "product_status:known_not_affected": "170",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49002.json",
      "version": "3"
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        "dateReserved": "2024-08-22T01:27:53.642Z",
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}



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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

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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.


Detection rules are retrieved from Rulezet.


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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.