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CVE-2022-50520 (GCVE-0-2022-50520)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:19 – Updated: 2026-05-23 15:24
VLAI
Title
drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios() As comment of pci_get_class() says, it returns a pci_device with its refcount increased and decreased the refcount for the input parameter @from if it is not NULL. If we break the loop in radeon_atrm_get_bios() with 'pdev' not NULL, we need to call pci_dev_put() to decrease the refcount. Add the missing pci_dev_put() to avoid refcount leak.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c61e2775873f603148e8e998a938721b7d222d24 , < 6f28c7f67af4ef9bca580ab67ae2d4511797af56 (git)
Affected: c61e2775873f603148e8e998a938721b7d222d24 , < e738f82e5b1311e8fb3d1409491a6fcce6418fbe (git)
Affected: c61e2775873f603148e8e998a938721b7d222d24 , < 1079df6acf56f99d86b0081a38c84701412cc90e (git)
Affected: c61e2775873f603148e8e998a938721b7d222d24 , < 470a77989037c3ab2b08bf2d026d2c0ddc35ff5b (git)
Affected: c61e2775873f603148e8e998a938721b7d222d24 , < 3991d98a8a07b71c02f3a39f77d6d9a7f575a5c4 (git)
Affected: c61e2775873f603148e8e998a938721b7d222d24 , < 88c6e0995c04b170563b5c894c50a3b2152e18c2 (git)
Affected: c61e2775873f603148e8e998a938721b7d222d24 , < b9decada8749b606fd8b4f04a3d6c74f7983d7bc (git)
Affected: c61e2775873f603148e8e998a938721b7d222d24 , < a6cffe54064a5f6c2162a85af3c16c6b453eac4e (git)
Affected: c61e2775873f603148e8e998a938721b7d222d24 , < 725a521a18734f65de05b8d353b5bd0d3ca4c37a (git)
Affected: 61ebf0a926149cc161131470cf848cb70b3d6fe6 (git)
Affected: 0a1d9a860832a5ca43114cdebf0e8650463cc1f0 (git)
Affected: 5f54f145719f453dccc73304cd427096bf7b806c (git)
Affected: 063ab9cb6308a0806d623c8d6dda5cb2b3b87fce (git)
Affected: 3.2.29 , < 3.3 (semver)
Affected: 3.4.12 , < 3.5 (semver)
Affected: 3.5.5 , < 3.6 (semver)
Affected: 3.2.60 , < 3.3 (semver)
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Linux Linux Affected: 3.6
Unaffected: 0 , < 3.6 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()\n\nAs comment of pci_get_class() says, it returns a pci_device with its\nrefcount increased and decreased the refcount for the input parameter\n@from if it is not NULL.\n\nIf we break the loop in radeon_atrm_get_bios() with \u0027pdev\u0027 not NULL, we\nneed to call pci_dev_put() to decrease the refcount. Add the missing\npci_dev_put() to avoid refcount leak."
          }
        ],
        "id": "CVE-2022-50520",
        "lastModified": "2026-06-17T05:23:42.890",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "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"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-10-07T16:15:35.747",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1079df6acf56f99d86b0081a38c84701412cc90e"
          },
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          }
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-Other"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T19:08:11+00:00",
      "cve": "CVE-2022-50520",
      "id": "CVE-2022-50520",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "120",
      "product_status:known_affected": "166",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50520.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T16:56:40Z",
      "cve": "CVE-2022-50520",
      "id": "CVE-2022-50520",
      "initial_release_date": "2025-10-08T23:39:24Z",
      "product_status:known_affected": "550",
      "product_status:known_not_affected": "139",
      "product_status:recommended": "245",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50520",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50520.json",
      "version": "32"
    }
  }
}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.