FKIE_CVE-2022-50244

Vulnerability from fkie_nvd - Published: 2025-09-15 14:15 - Updated: 2026-06-17 05:23
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02cd3032b154fa02fdf90e7467abaeed889330b2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdecPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/139abd4c626a6f7ce02789ed5f73aa2256e0542bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22511eefa61db26e12c97dd7ada3071dbdfcb004Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/361412dae1690d4b5df6f92fc943cdc773c95cbcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82e5481428faf11c79b9c094dd24a1849bbf64acPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82e68432668ae75b4c814d160f6987ecb0681273Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4b2e35df919d99bbbed033c2fa0b607f9f463b5Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/misc/cxl/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "82e68432668ae75b4c814d160f6987ecb0681273",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            },
            {
              "lessThan": "82e5481428faf11c79b9c094dd24a1849bbf64ac",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            },
            {
              "lessThan": "c4b2e35df919d99bbbed033c2fa0b607f9f463b5",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            },
            {
              "lessThan": "361412dae1690d4b5df6f92fc943cdc773c95cbc",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            },
            {
              "lessThan": "0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            },
            {
              "lessThan": "22511eefa61db26e12c97dd7ada3071dbdfcb004",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            },
            {
              "lessThan": "139abd4c626a6f7ce02789ed5f73aa2256e0542b",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            },
            {
              "lessThan": "2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            },
            {
              "lessThan": "02cd3032b154fa02fdf90e7467abaeed889330b2",
              "status": "affected",
              "version": "f204e0b8cedd7da1dfcfd05ed6b7692737e24029",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/misc/cxl/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.18"
            },
            {
              "lessThan": "3.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F4A45792-5A6F-447E-B560-967174753B24",
              "versionEndExcluding": "4.9.337",
              "versionStartIncluding": "3.18",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "4.14.303",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "4.19.270",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A0C0D95E-414A-445E-941B-3EF6A4D3A093",
              "versionEndExcluding": "5.4.229",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D05D31FC-BD74-4F9E-B1D8-9CED62BE6F65",
              "versionEndExcluding": "5.10.163",
              "versionStartIncluding": "5.5",
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C720A569-3D93-4D77-95F6-E2B3A3267D9F",
              "versionEndExcluding": "6.0.16",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2022-50244",
  "lastModified": "2026-06-17T05:23:03.703",
  "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": "2025-09-15T14:15:34.763",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/02cd3032b154fa02fdf90e7467abaeed889330b2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "url": "https://git.kernel.org/stable/c/139abd4c626a6f7ce02789ed5f73aa2256e0542b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/22511eefa61db26e12c97dd7ada3071dbdfcb004"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/361412dae1690d4b5df6f92fc943cdc773c95cbc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/82e5481428faf11c79b9c094dd24a1849bbf64ac"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/82e68432668ae75b4c814d160f6987ecb0681273"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c4b2e35df919d99bbbed033c2fa0b607f9f463b5"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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