gsd-2021-44879
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.
Aliases
Aliases
CVE-2021-44879


To clipboard 

{
   GSD: {
      alias: "CVE-2021-44879",
      description: "In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.",
      id: "GSD-2021-44879",
      references: [
         "https://www.suse.com/security/cve/CVE-2021-44879.html",
         "https://ubuntu.com/security/CVE-2021-44879",
         "https://security.archlinux.org/CVE-2021-44879",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2021-44879",
         ],
         details: "In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.",
         id: "GSD-2021-44879",
         modified: "2023-12-13T01:23:20.237405Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "cve@mitre.org",
            ID: "CVE-2021-44879",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "n/a",
                              version: {
                                 version_data: [
                                    {
                                       version_value: "n/a",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "n/a",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "n/a",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3",
                  refsource: "CONFIRM",
                  url: "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3",
               },
               {
                  name: "https://bugzilla.kernel.org/show_bug.cgi?id=215231",
                  refsource: "MISC",
                  url: "https://bugzilla.kernel.org/show_bug.cgi?id=215231",
               },
               {
                  name: "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao@kernel.org/T/",
                  refsource: "MISC",
                  url: "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao@kernel.org/T/",
               },
               {
                  name: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f",
                  refsource: "MISC",
                  url: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f",
               },
               {
                  name: "[debian-lts-announce] 20240111 [SECURITY] [DLA 3710-1] linux security update",
                  refsource: "MLIST",
                  url: "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html",
               },
               {
                  name: "[debian-lts-announce] 20240111 [SECURITY] [DLA 3711-1] linux-5.10 security update",
                  refsource: "MLIST",
                  url: "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         cve: {
            configurations: [
               {
                  nodes: [
                     {
                        cpeMatch: [
                           {
                              criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                              matchCriteriaId: "6FBCF385-C05A-44CC-AF30-EDA38785D4BD",
                              versionEndExcluding: "5.16.3",
                              vulnerable: true,
                           },
                        ],
                        negate: false,
                        operator: "OR",
                     },
                  ],
               },
            ],
            descriptions: [
               {
                  lang: "en",
                  value: "In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.",
               },
               {
                  lang: "es",
                  value: "En la función gc_data_segment en el archivo fs/f2fs/gc.c en el kernel de Linux versiones anteriores a 5.16.3, no son considerados los archivos especiales, conllevando a una desreferencia de puntero NULL de move_data_page",
               },
            ],
            id: "CVE-2021-44879",
            lastModified: "2024-01-11T21:15:09.497",
            metrics: {
               cvssMetricV2: [
                  {
                     acInsufInfo: false,
                     baseSeverity: "MEDIUM",
                     cvssData: {
                        accessComplexity: "MEDIUM",
                        accessVector: "NETWORK",
                        authentication: "NONE",
                        availabilityImpact: "PARTIAL",
                        baseScore: 4.3,
                        confidentialityImpact: "NONE",
                        integrityImpact: "NONE",
                        vectorString: "AV:N/AC:M/Au:N/C:N/I:N/A:P",
                        version: "2.0",
                     },
                     exploitabilityScore: 8.6,
                     impactScore: 2.9,
                     obtainAllPrivilege: false,
                     obtainOtherPrivilege: false,
                     obtainUserPrivilege: false,
                     source: "nvd@nist.gov",
                     type: "Primary",
                     userInteractionRequired: true,
                  },
               ],
               cvssMetricV31: [
                  {
                     cvssData: {
                        attackComplexity: "LOW",
                        attackVector: "LOCAL",
                        availabilityImpact: "HIGH",
                        baseScore: 5.5,
                        baseSeverity: "MEDIUM",
                        confidentialityImpact: "NONE",
                        integrityImpact: "NONE",
                        privilegesRequired: "NONE",
                        scope: "UNCHANGED",
                        userInteraction: "REQUIRED",
                        vectorString: "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                        version: "3.1",
                     },
                     exploitabilityScore: 1.8,
                     impactScore: 3.6,
                     source: "nvd@nist.gov",
                     type: "Primary",
                  },
               ],
            },
            published: "2022-02-14T12:15:15.697",
            references: [
               {
                  source: "cve@mitre.org",
                  tags: [
                     "Exploit",
                     "Issue Tracking",
                     "Vendor Advisory",
                  ],
                  url: "https://bugzilla.kernel.org/show_bug.cgi?id=215231",
               },
               {
                  source: "cve@mitre.org",
                  tags: [
                     "Mailing List",
                     "Vendor Advisory",
                  ],
                  url: "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3",
               },
               {
                  source: "cve@mitre.org",
                  tags: [
                     "Mailing List",
                     "Patch",
                     "Vendor Advisory",
                  ],
                  url: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f",
               },
               {
                  source: "cve@mitre.org",
                  url: "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html",
               },
               {
                  source: "cve@mitre.org",
                  url: "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html",
               },
               {
                  source: "cve@mitre.org",
                  url: "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/",
               },
            ],
            sourceIdentifier: "cve@mitre.org",
            vulnStatus: "Modified",
            weaknesses: [
               {
                  description: [
                     {
                        lang: "en",
                        value: "CWE-476",
                     },
                  ],
                  source: "nvd@nist.gov",
                  type: "Primary",
               },
            ],
         },
      },
   },
}


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