CVE-2021-47310 (GCVE-0-2021-47310)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:35 – Updated: 2026-05-11 13:52
VLAI
Title
net: ti: fix UAF in tlan_remove_one
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ti: fix UAF in tlan_remove_one priv is netdev private data and it cannot be used after free_netdev() call. Using priv after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-21 15:35 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa , < a18a8d9cfbb112ad72e625372849adc3986fd6bf (git)
Affected: 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa , < c263ae8c7e4c482387de5e6c89e213f8173fe8b6 (git)
Affected: 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa , < 0538b0ab7d2c396e385694228c7cdcd2d2c514e9 (git)
Affected: 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa , < a0a817b2d308fac090a05cbbe80988e073ac5193 (git)
Affected: 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa , < b7e5563f2a7862a9e4796abb9908b092f677e3c1 (git)
Affected: 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa , < f2a062fcfe1d6f1b0a86fa76ae21c277d65f4405 (git)
Affected: 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa , < 93efab0ef2a607fff9166d447c4035f98b5db342 (git)
Affected: 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa , < 0336f8ffece62f882ab3012820965a786a983f70 (git)
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Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 4.4.277 , ≤ 4.4.* (semver)
Unaffected: 4.9.277 , ≤ 4.9.* (semver)
Unaffected: 4.14.241 , ≤ 4.14.* (semver)
Unaffected: 4.19.199 , ≤ 4.19.* (semver)
Unaffected: 5.4.135 , ≤ 5.4.* (semver)
Unaffected: 5.10.53 , ≤ 5.10.* (semver)
Unaffected: 5.13.5 , ≤ 5.13.* (semver)
Unaffected: 5.14 , ≤ * (original_commit_for_fix)
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                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.135",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.53",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.13.*",
                  "status": "unaffected",
                  "version": "5.13.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.14",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.4.277",
                      "versionStartIncluding": "3.10",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.9.277",
                      "versionStartIncluding": "3.10",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.14.241",
                      "versionStartIncluding": "3.10",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.19.199",
                      "versionStartIncluding": "3.10",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.135",
                      "versionStartIncluding": "3.10",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.53",
                      "versionStartIncluding": "3.10",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.13.5",
                      "versionStartIncluding": "3.10",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.14",
                      "versionStartIncluding": "3.10",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ti: fix UAF in tlan_remove_one\n\npriv is netdev private data and it cannot be\nused after free_netdev() call. Using priv after free_netdev()\ncan cause UAF bug. Fix it by moving free_netdev() at the end of the\nfunction."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T13:52:00.968Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/a18a8d9cfbb112ad72e625372849adc3986fd6bf"
            },
            {
              "url": "https://git.kernel.org/stable/c/c263ae8c7e4c482387de5e6c89e213f8173fe8b6"
            },
            {
              "url": "https://git.kernel.org/stable/c/0538b0ab7d2c396e385694228c7cdcd2d2c514e9"
            },
            {
              "url": "https://git.kernel.org/stable/c/a0a817b2d308fac090a05cbbe80988e073ac5193"
            },
            {
              "url": "https://git.kernel.org/stable/c/b7e5563f2a7862a9e4796abb9908b092f677e3c1"
            },
            {
              "url": "https://git.kernel.org/stable/c/f2a062fcfe1d6f1b0a86fa76ae21c277d65f4405"
            },
            {
              "url": "https://git.kernel.org/stable/c/93efab0ef2a607fff9166d447c4035f98b5db342"
            },
            {
              "url": "https://git.kernel.org/stable/c/0336f8ffece62f882ab3012820965a786a983f70"
            }
          ],
          "title": "net: ti: fix UAF in tlan_remove_one",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2021-47310",
        "datePublished": "2024-05-21T14:35:28.649Z",
        "dateReserved": "2024-05-21T14:28:16.972Z",
        "dateUpdated": "2026-05-11T13:52:00.968Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.