gsd-2021-38166
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability.
Aliases
Aliases
CVE-2021-38166


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-38166",
    "description": "In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability.",
    "id": "GSD-2021-38166",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-38166.html",
      "https://www.debian.org/security/2021/dsa-4978",
      "https://ubuntu.com/security/CVE-2021-38166",
      "https://advisories.mageia.org/CVE-2021-38166.html",
      "https://security.archlinux.org/CVE-2021-38166"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-38166"
      ],
      "details": "In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability.",
      "id": "GSD-2021-38166",
      "modified": "2023-12-13T01:23:17.299160Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-38166",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
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                    "version": {
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                        {
                          "version_value": "n/a"
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      "references": {
        "reference_data": [
          {
            "name": "https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu@gmail.com/",
            "refsource": "MISC",
            "url": "https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu@gmail.com/"
          },
          {
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          },
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            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GUVLBJKZMWA3E3YXSH4SZ7BOYGJP4GXP/"
          },
          {
            "name": "FEDORA-2021-f35f45a76f",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UL6CH5M5PRLMA3KPBX4LPUO6Z73GRISO/"
          },
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            "name": "https://security.netapp.com/advisory/ntap-20210909-0001/",
            "refsource": "CONFIRM",
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          },
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            "url": "https://www.debian.org/security/2021/dsa-4978"
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        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
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                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "5.13.8",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe_name": [],
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              },
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                "cpe_name": [],
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            ],
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          },
          {
            "children": [],
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                "cpe_name": [],
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            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ID": "CVE-2021-38166"
        },
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        "data_version": "4.0",
        "description": {
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              "value": "In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-787"
                },
                {
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                  "value": "CWE-190"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu@gmail.com/",
              "refsource": "MISC",
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              ],
              "url": "https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu@gmail.com/"
            },
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403243fc7bbb7de644db8587c03de36da6",
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              "tags": [
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            },
            {
              "name": "FEDORA-2021-f35f45a76f",
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                "Third Party Advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UL6CH5M5PRLMA3KPBX4LPUO6Z73GRISO/"
            },
            {
              "name": "FEDORA-2021-b22606e88b",
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              "tags": [
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                "Third Party Advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GUVLBJKZMWA3E3YXSH4SZ7BOYGJP4GXP/"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210909-0001/",
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              "tags": [
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              "url": "https://security.netapp.com/advisory/ntap-20210909-0001/"
            },
            {
              "name": "DSA-4978",
              "refsource": "DEBIAN",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2021/dsa-4978"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.6,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-04-01T20:27Z",
      "publishedDate": "2021-08-07T18:15Z"
    }
  }
}


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