ghsa-jfcj-m759-47m9
Vulnerability from github
Published
2025-09-15 15:31
Modified
2025-09-15 15:31
Details

In the Linux kernel, the following vulnerability has been resolved:

cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()

If device_register() fails in cxl_pci_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device.

As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50244"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T14:15:34Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()\n\nIf device_register() fails in cxl_pci_afu|adapter(), the device\nis not added, device_unregister() can not be called in the error\npath, otherwise it will cause a null-ptr-deref because of removing\nnot added device.\n\nAs comment of device_register() says, it should use put_device() to give\nup the reference in the error path. So split device_unregister() into\ndevice_del() and put_device(), then goes to put dev when register fails.",
  "id": "GHSA-jfcj-m759-47m9",
  "modified": "2025-09-15T15:31:22Z",
  "published": "2025-09-15T15:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50244"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02cd3032b154fa02fdf90e7467abaeed889330b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/139abd4c626a6f7ce02789ed5f73aa2256e0542b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22511eefa61db26e12c97dd7ada3071dbdfcb004"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/361412dae1690d4b5df6f92fc943cdc773c95cbc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82e5481428faf11c79b9c094dd24a1849bbf64ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82e68432668ae75b4c814d160f6987ecb0681273"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4b2e35df919d99bbbed033c2fa0b607f9f463b5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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