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: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "n/a",
                              version: {
                                 version_data: [
                                    {
                                       version_value: "n/a",
                                    },
                                 ],
                              },
                           },
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                     },
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         data_format: "MITRE",
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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: {
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                        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/",
               },
               {
                  name: "https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403243fc7bbb7de644db8587c03de36da6",
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                  url: "https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403243fc7bbb7de644db8587c03de36da6",
               },
               {
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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/",
               },
               {
                  name: "https://security.netapp.com/advisory/ntap-20210909-0001/",
                  refsource: "CONFIRM",
                  url: "https://security.netapp.com/advisory/ntap-20210909-0001/",
               },
               {
                  name: "DSA-4978",
                  refsource: "DEBIAN",
                  url: "https://www.debian.org/security/2021/dsa-4978",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        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: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                        cpe_name: [],
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                  operator: "OR",
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               {
                  children: [],
                  cpe_match: [
                     {
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                        cpe_name: [],
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         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "cve@mitre.org",
               ID: "CVE-2021-38166",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
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                  {
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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",
                        },
                        {
                           lang: "en",
                           value: "CWE-190",
                        },
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                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu@gmail.com/",
                     refsource: "MISC",
                     tags: [
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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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                  },
                  {
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                  },
                  {
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                  },
                  {
                     name: "https://security.netapp.com/advisory/ntap-20210909-0001/",
                     refsource: "CONFIRM",
                     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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