github - ghsa-q6cx-8jm9-6wv4

ghsa-q6cx-8jm9-6wv4

Vulnerability from github

Published

2024-10-21 21:30

Modified

2024-10-31 15:30

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49000"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:11Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-q6cx-8jm9-6wv4",
  "modified": "2024-10-31T15:30:58Z",
  "published": "2024-10-21T21:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49000"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2022-49000

Vulnerability from cvelistv5

Published

2024-10-21 20:06

Modified

2024-12-19 08:12

Severity ?

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.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723
	https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94
	https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34
	https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d

Impacted products

Vendor

Product

Version

▼

Linux

Version: 89a6079df791aeace2044ea93be1b397195824ec
Version: 89a6079df791aeace2044ea93be1b397195824ec
Version: 89a6079df791aeace2044ea93be1b397195824ec
Version: 89a6079df791aeace2044ea93be1b397195824ec

Linux

Version: 5.0

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-49000",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:15:17.821654Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:18:40.762Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/intel/iommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
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              "lessThan": "17f67414718e6aba123335a33b7d15aa594fff34",
              "status": "affected",
              "version": "89a6079df791aeace2044ea93be1b397195824ec",
              "versionType": "git"
            },
            {
              "lessThan": "afca9e19cc720bfafc75dc5ce429c185ca93f31d",
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          "vendor": "Linux",
          "versions": [
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            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.82",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "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": {
        "dateUpdated": "2024-12-19T08:12:11.796Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34"
        },
        {
          "url": "https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d"
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      ],
      "title": "iommu/vt-d: Fix PCI device refcount leak in has_external_pci()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49000",
    "datePublished": "2024-10-21T20:06:14.753Z",
    "dateReserved": "2024-08-22T01:27:53.642Z",
    "dateUpdated": "2024-12-19T08:12:11.796Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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