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CVE-2022-50244 (GCVE-0-2022-50244)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:02 – Updated: 2026-05-11 19:15
VLAI
Title
cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < 82e68432668ae75b4c814d160f6987ecb0681273 (git)
Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < 82e5481428faf11c79b9c094dd24a1849bbf64ac (git)
Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < c4b2e35df919d99bbbed033c2fa0b607f9f463b5 (git)
Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < 361412dae1690d4b5df6f92fc943cdc773c95cbc (git)
Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < 0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec (git)
Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < 22511eefa61db26e12c97dd7ada3071dbdfcb004 (git)
Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < 139abd4c626a6f7ce02789ed5f73aa2256e0542b (git)
Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < 2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339 (git)
Affected: f204e0b8cedd7da1dfcfd05ed6b7692737e24029 , < 02cd3032b154fa02fdf90e7467abaeed889330b2 (git)
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Linux Linux Affected: 3.18
Unaffected: 0 , < 3.18 (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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        "published": "2025-09-15T14:15:34.763",
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            "tags": [
              "Patch"
            ],
            "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"
            ],
            "url": "https://git.kernel.org/stable/c/2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "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"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:30:10+00:00",
      "cve": "CVE-2022-50244",
      "id": "CVE-2022-50244",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50244.json",
      "version": "3"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.