CVE-2022-50481 (GCVE-0-2022-50481)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:16 – Updated: 2025-10-04 15:16
VLAI?
Title
cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()
Summary
In the Linux kernel, the following vulnerability has been resolved: cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter() If device_register() fails in cxl_register_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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < 96fba6fb95bdede80583c262ac185da09661f264 (git)
Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < 1ae581696b7a799afa39a664c4b721569643f58a (git)
Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < d775a1da5a52b4f4bb02f2707ba420d1bec48dbb (git)
Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < 60b2ed21a65f3f5318666ccd765c3507991370cf (git)
Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < 170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8 (git)
Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < e5021bbf11b024cc65ea1e84c377df484183be4b (git)
Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < b32559ee4e6667c5c3daf4ec5454c277d1f255d2 (git)
Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < ab44c182353be101c3be9465e1d15d42130c53c4 (git)
Affected: 14baf4d9c739e6e69150512d2eb23c71fffcc192 , < 61c80d1c3833e196256fb060382db94f24d3d9a7 (git)
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    Linux Linux Affected: 4.6
Unaffected: 0 , < 4.6 (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)
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{
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          "vendor": "Linux",
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              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
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              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()\n\nIf device_register() fails in cxl_register_afu|adapter(), the device\nis not added, device_unregister() can not be called in the error path,\notherwise it will cause a null-ptr-deref because of removing not added\ndevice.\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."
        }
      ],
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        "dateUpdated": "2025-10-04T15:16:40.374Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
        {
          "url": "https://git.kernel.org/stable/c/1ae581696b7a799afa39a664c4b721569643f58a"
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        {
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          "url": "https://git.kernel.org/stable/c/170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8"
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        },
        {
          "url": "https://git.kernel.org/stable/c/ab44c182353be101c3be9465e1d15d42130c53c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/61c80d1c3833e196256fb060382db94f24d3d9a7"
        }
      ],
      "title": "cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50481",
    "datePublished": "2025-10-04T15:16:40.374Z",
    "dateReserved": "2025-10-04T15:13:33.468Z",
    "dateUpdated": "2025-10-04T15:16:40.374Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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