spi: tegra20-slink: fix UAF in tegra_slink_remove()

{
  "id": "82d4e1acadf393d80a5a6747eb4438f608b4ce599c1afa1f6a7188b65163349a",
  "url": "https://osv.dev/vulnerability/CVE-2022-50192",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "spi: tegra20-slink: fix UAF in tegra_slink_remove()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: spi: tegra20-slink: fix UAF in tegra_slink_remove() After calling spi_unregister_master(), the refcount of master will be decrease to 0, and it will be freed in spi_controller_release(), the device data also will be freed, so it will lead a UAF when using 'tspi'. To fix this, get the master before unregister and put it when finish using it.",
    "evidence": "osv:CVE-2022-50192",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.61",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.18.18",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.19.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50192",
      "aliases": [
        "CVE-2022-50192"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                },
                {
                  "fixed": "415b4ce61308f24583912d887772dfcbf97f1d20"
                },
                {
                  "fixed": "800c7767e05d29656713e04532823a752e57e037"
                },
                {
                  "fixed": "67f77172644260482fdafc03b6025847944701e5"
                },
                {
                  "fixed": "7e9984d183bb1e99e766c5c2b950ff21f7f7b6c0"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50192.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "5.15.61"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.18.18"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.19.0"
                },
                {
                  "fixed": "5.19.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50192.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.133398029Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/415b4ce61308f24583912d887772dfcbf97f1d20",
        "https://git.kernel.org/stable/c/67f77172644260482fdafc03b6025847944701e5",
        "https://git.kernel.org/stable/c/7e9984d183bb1e99e766c5c2b950ff21f7f7b6c0",
        "https://git.kernel.org/stable/c/800c7767e05d29656713e04532823a752e57e037",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50192.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50192",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50192.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50192",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 492689,
  "published_at": "2025-06-18T11:03:37.549+00:00"
}