CVE-2021-47143 (GCVE-0-2021-47143)

Vulnerability from cvelistv5 – Published: 2024-03-25 09:07 – Updated: 2026-05-11 13:48
VLAI
Title
net/smc: remove device from smcd_dev_list after failed device_add()
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: remove device from smcd_dev_list after failed device_add() If the device_add() for a smcd_dev fails, there's no cleanup step that rolls back the earlier list_add(). The device subsequently gets freed, and we end up with a corrupted list. Add some error handling that removes the device from the list.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:54 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c6ba7c9ba43de1b57e9a53946e7ff988554c84ed , < 8b2cdc004d21a7255f219706dca64411108f7897 (git)
Affected: c6ba7c9ba43de1b57e9a53946e7ff988554c84ed , < 40588782f1016c655ae1d302892f61d35af96842 (git)
Affected: c6ba7c9ba43de1b57e9a53946e7ff988554c84ed , < 444d7be9532dcfda8e0385226c862fd7e986f607 (git)
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Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 5.10.42 , ≤ 5.10.* (semver)
Unaffected: 5.12.9 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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                  "versionType": "git"
                },
                {
                  "lessThan": "40588782f101",
                  "status": "affected",
                  "version": "c6ba7c9ba43d",
                  "versionType": "git"
                },
                {
                  "lessThan": "444d7be9532d",
                  "status": "affected",
                  "version": "c6ba7c9ba43d",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/smc/smc_ism.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "4.19"
                },
                {
                  "lessThan": "4.19",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "custom"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.42",
                  "versionType": "custom"
                },
                {
                  "lessThanOrEqual": "5.12.*",
                  "status": "unaffected",
                  "version": "5.12.9",
                  "versionType": "custom"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: remove device from smcd_dev_list after failed device_add()\n\nIf the device_add() for a smcd_dev fails, there\u0027s no cleanup step that\nrolls back the earlier list_add(). The device subsequently gets freed,\nand we end up with a corrupted list.\n\nAdd some error handling that removes the device from the list."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-05-29T05:02:51.734Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/8b2cdc004d21a7255f219706dca64411108f7897"
            },
            {
              "url": "https://git.kernel.org/stable/c/40588782f1016c655ae1d302892f61d35af96842"
            },
            {
              "url": "https://git.kernel.org/stable/c/444d7be9532dcfda8e0385226c862fd7e986f607"
            }
          ],
          "title": "net/smc: remove device from smcd_dev_list after failed device_add()",
          "x_generator": {
            "engine": "bippy-a5840b7849dd"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2021-47143",
        "datePublished": "2024-03-25T09:07:41.075Z",
        "dateReserved": "2024-03-04T18:12:48.844Z",
        "dateUpdated": "2024-09-11T17:33:14.760Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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

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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.



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.