cve-2021-47259
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2024-11-04 12:02
Summary
NFS: Fix use-after-free in nfs4_init_client()
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


{
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        "affected": [
          {
            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:4.13:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "linux_kernel",
            "vendor": "linux",
            "versions": [
              {
                "status": "affected",
                "version": "4.13"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
            ],
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            "versions": [
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                "status": "affected",
                "version": "8dcbec6d20eb",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-47259",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-22T16:41:04.603993Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:14:09.514Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:07.994Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "tags": [
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            "url": "https://git.kernel.org/stable/c/42c10b0db064e45f5c5ae7019bbf2168ffab766c"
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            "url": "https://git.kernel.org/stable/c/3e3c7ebbfac152d08be75c92802a64a1f6471a15"
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            "url": "https://git.kernel.org/stable/c/c3b6cf64dfe4ef96e7341508d50d6998da7062c7"
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            "url": "https://git.kernel.org/stable/c/476bdb04c501fc64bf3b8464ffddefc8dbe01577"
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        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/nfs4client.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c7eab9e2d7b4",
              "status": "affected",
              "version": "8dcbec6d20eb",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "8dcbec6d20eb",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "8dcbec6d20eb",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "8dcbec6d20eb",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "8dcbec6d20eb",
              "versionType": "git"
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              "status": "affected",
              "version": "8dcbec6d20eb",
              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/nfs4client.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.13"
            },
            {
              "lessThan": "4.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.237",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.126",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.11",
              "versionType": "semver"
            },
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              "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\nNFS: Fix use-after-free in nfs4_init_client()\n\nKASAN reports a use-after-free when attempting to mount two different\nexports through two different NICs that belong to the same server.\n\nOlga was able to hit this with kernels starting somewhere between 5.7\nand 5.10, but I traced the patch that introduced the clear_bit() call to\n4.13. So something must have changed in the refcounting of the clp\npointer to make this call to nfs_put_client() the very last one."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T12:02:28.785Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/c7eab9e2d7b4e983ce280276fb920af649955897"
        },
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          "url": "https://git.kernel.org/stable/c/42c10b0db064e45f5c5ae7019bbf2168ffab766c"
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          "url": "https://git.kernel.org/stable/c/476bdb04c501fc64bf3b8464ffddefc8dbe01577"
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      ],
      "title": "NFS: Fix use-after-free in nfs4_init_client()",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47259",
    "datePublished": "2024-05-21T14:19:52.738Z",
    "dateReserved": "2024-05-21T13:27:52.125Z",
    "dateUpdated": "2024-11-04T12:02:28.785Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
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  }
}


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