CVE-2022-50157 (GCVE-0-2022-50157)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:03 – Updated: 2025-06-18 11:03
VLAI?
Title
PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()
Summary
In the Linux kernel, the following vulnerability has been resolved: PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains() of_get_next_child() returns a node pointer with refcount incremented, so we should use of_node_put() on it when we don't need it anymore. mc_pcie_init_irq_domains() only calls of_node_put() in the normal path, missing it in some error paths. Add missing of_node_put() to avoid refcount leak.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6f15a9c9f94133bee0d861a4bf25e10aaa95219d , < c0ad5c7e68d10f6f8ffb0f4329e3c19404fbca58 (git)
Affected: 6f15a9c9f94133bee0d861a4bf25e10aaa95219d , < 6cd5f93b5c6a66c68a91dbc604a78207252ecd43 (git)
Affected: 6f15a9c9f94133bee0d861a4bf25e10aaa95219d , < 880ece912b958a0c92cc0baa8e906fb9b49a4b53 (git)
Affected: 6f15a9c9f94133bee0d861a4bf25e10aaa95219d , < f030304fdeb87ec8f1b518c73703214aec6cc24a (git)
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    Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.61 , ≤ 5.15.* (semver)
Unaffected: 5.18.18 , ≤ 5.18.* (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/controller/pcie-microchip-host.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "version": "6f15a9c9f94133bee0d861a4bf25e10aaa95219d",
              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
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              "version": "0",
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            {
              "lessThanOrEqual": "5.18.*",
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              "version": "5.18.18",
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            {
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              "version": "5.19.2",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.61",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.18",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.2",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()\n\nof_get_next_child() returns a node pointer with refcount incremented, so we\nshould use of_node_put() on it when we don\u0027t need it anymore.\n\nmc_pcie_init_irq_domains() only calls of_node_put() in the normal path,\nmissing it in some error paths.  Add missing of_node_put() to avoid\nrefcount leak."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:03:14.530Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c0ad5c7e68d10f6f8ffb0f4329e3c19404fbca58"
        },
        {
          "url": "https://git.kernel.org/stable/c/6cd5f93b5c6a66c68a91dbc604a78207252ecd43"
        },
        {
          "url": "https://git.kernel.org/stable/c/880ece912b958a0c92cc0baa8e906fb9b49a4b53"
        },
        {
          "url": "https://git.kernel.org/stable/c/f030304fdeb87ec8f1b518c73703214aec6cc24a"
        }
      ],
      "title": "PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50157",
    "datePublished": "2025-06-18T11:03:14.530Z",
    "dateReserved": "2025-06-18T10:57:27.425Z",
    "dateUpdated": "2025-06-18T11:03:14.530Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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