cve-2021-47311
Vulnerability from cvelistv5
Published
2024-05-21 14:35
Modified
2024-12-19 07:39
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833
Impacted products
Vendor Product Version
Linux Linux Version: 4.9
Show details on NVD website


{
  "containers": {
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                "id": "CVE-2021-47311",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
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                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-08-19T18:50:38.591727Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
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              "version": "0",
              "versionType": "semver"
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              "version": "4.9.277",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.241",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.135",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.53",
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            {
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              "version": "5.13.5",
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            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.14",
              "versionType": "original_commit_for_fix"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qcom/emac: fix UAF in emac_remove\n\nadpt is netdev private data and it cannot be\nused after free_netdev() call. Using adpt after free_netdev()\ncan cause UAF bug. Fix it by moving free_netdev() at the end of the\nfunction."
        }
      ],
      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47311",
    "datePublished": "2024-05-21T14:35:29.304Z",
    "dateReserved": "2024-05-21T14:28:16.973Z",
    "dateUpdated": "2024-12-19T07:39:29.332Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
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  }
}


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