CVE-2021-47018 (GCVE-0-2021-47018)

Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2025-05-04 07:02
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/64: Fix the definition of the fixmap area At the time being, the fixmap area is defined at the top of the address space or just below KASAN. This definition is not valid for PPC64. For PPC64, use the top of the I/O space. Because of circular dependencies, it is not possible to include asm/fixmap.h in asm/book3s/64/pgtable.h , so define a fixed size AREA at the top of the I/O space for fixmap and ensure during build that the size is big enough.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 , < 4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd (git)
Affected: 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 , < abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f (git)
Affected: 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 , < a84df7c80bdac598d6ac9268ae578da6928883e8 (git)
Affected: 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 , < 9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c (git)
Create a notification for this product.
    Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.37 , ≤ 5.10.* (semver)
Unaffected: 5.11.21 , ≤ 5.11.* (semver)
Unaffected: 5.12.4 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.558Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47018",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:58:06.446174Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:33:29.939Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/include/asm/book3s/64/pgtable.h",
            "arch/powerpc/include/asm/fixmap.h",
            "arch/powerpc/include/asm/nohash/64/pgtable.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd",
              "status": "affected",
              "version": "265c3491c4bc8d40587996d6ee2f447a7ccfb4f3",
              "versionType": "git"
            },
            {
              "lessThan": "abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f",
              "status": "affected",
              "version": "265c3491c4bc8d40587996d6ee2f447a7ccfb4f3",
              "versionType": "git"
            },
            {
              "lessThan": "a84df7c80bdac598d6ac9268ae578da6928883e8",
              "status": "affected",
              "version": "265c3491c4bc8d40587996d6ee2f447a7ccfb4f3",
              "versionType": "git"
            },
            {
              "lessThan": "9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c",
              "status": "affected",
              "version": "265c3491c4bc8d40587996d6ee2f447a7ccfb4f3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/include/asm/book3s/64/pgtable.h",
            "arch/powerpc/include/asm/fixmap.h",
            "arch/powerpc/include/asm/nohash/64/pgtable.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.37",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.11.*",
              "status": "unaffected",
              "version": "5.11.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.37",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.11.21",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.4",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/64: Fix the definition of the fixmap area\n\nAt the time being, the fixmap area is defined at the top of\nthe address space or just below KASAN.\n\nThis definition is not valid for PPC64.\n\nFor PPC64, use the top of the I/O space.\n\nBecause of circular dependencies, it is not possible to include\nasm/fixmap.h in asm/book3s/64/pgtable.h , so define a fixed size\nAREA at the top of the I/O space for fixmap and ensure during\nbuild that the size is big enough."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:02:24.930Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f"
        },
        {
          "url": "https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c"
        }
      ],
      "title": "powerpc/64: Fix the definition of the fixmap area",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47018",
    "datePublished": "2024-02-28T08:13:33.362Z",
    "dateReserved": "2024-02-27T18:42:55.954Z",
    "dateUpdated": "2025-05-04T07:02:24.930Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.37\", \"matchCriteriaId\": \"7A4CF5D6-ACBA-4980-ABFD-3D7A53B5BB4E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.11.21\", \"matchCriteriaId\": \"8CBB94EC-EC33-4464-99C5-03E5542715F0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.12\", \"versionEndExcluding\": \"5.12.4\", \"matchCriteriaId\": \"D8C7052F-1B7B-4327-9C2B-84EBF3243838\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/64: Fix the definition of the fixmap area\\n\\nAt the time being, the fixmap area is defined at the top of\\nthe address space or just below KASAN.\\n\\nThis definition is not valid for PPC64.\\n\\nFor PPC64, use the top of the I/O space.\\n\\nBecause of circular dependencies, it is not possible to include\\nasm/fixmap.h in asm/book3s/64/pgtable.h , so define a fixed size\\nAREA at the top of the I/O space for fixmap and ensure during\\nbuild that the size is big enough.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/64: corrige la definici\\u00f3n del \\u00e1rea de fixmap Por el momento, el \\u00e1rea de fixmap est\\u00e1 definida en la parte superior del espacio de direcciones o justo debajo de KASAN. Esta definici\\u00f3n no es v\\u00e1lida para PPC64. Para PPC64, utilice la parte superior del espacio de E/S. Debido a dependencias circulares, no es posible incluir asm/fixmap.h en asm/book3s/64/pgtable.h, as\\u00ed que defina un \\u00c1REA de tama\\u00f1o fijo en la parte superior del espacio de E/S para fixmap y aseg\\u00farese durante la compilaci\\u00f3n de que el El tama\\u00f1o es lo suficientemente grande.\"}]",
      "id": "CVE-2021-47018",
      "lastModified": "2025-01-08T16:53:56.173",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-02-28T09:15:39.007",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47018\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:39.007\",\"lastModified\":\"2025-01-08T16:53:56.173\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/64: Fix the definition of the fixmap area\\n\\nAt the time being, the fixmap area is defined at the top of\\nthe address space or just below KASAN.\\n\\nThis definition is not valid for PPC64.\\n\\nFor PPC64, use the top of the I/O space.\\n\\nBecause of circular dependencies, it is not possible to include\\nasm/fixmap.h in asm/book3s/64/pgtable.h , so define a fixed size\\nAREA at the top of the I/O space for fixmap and ensure during\\nbuild that the size is big enough.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/64: corrige la definici\u00f3n del \u00e1rea de fixmap Por el momento, el \u00e1rea de fixmap est\u00e1 definida en la parte superior del espacio de direcciones o justo debajo de KASAN. Esta definici\u00f3n no es v\u00e1lida para PPC64. Para PPC64, utilice la parte superior del espacio de E/S. Debido a dependencias circulares, no es posible incluir asm/fixmap.h en asm/book3s/64/pgtable.h, as\u00ed que defina un \u00c1REA de tama\u00f1o fijo en la parte superior del espacio de E/S para fixmap y aseg\u00farese durante la compilaci\u00f3n de que el El tama\u00f1o es lo suficientemente grande.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.37\",\"matchCriteriaId\":\"7A4CF5D6-ACBA-4980-ABFD-3D7A53B5BB4E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.11.21\",\"matchCriteriaId\":\"8CBB94EC-EC33-4464-99C5-03E5542715F0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.12.4\",\"matchCriteriaId\":\"D8C7052F-1B7B-4327-9C2B-84EBF3243838\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:24:39.558Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47018\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:58:06.446174Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:17.002Z\"}}], \"cna\": {\"title\": \"powerpc/64: Fix the definition of the fixmap area\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"265c3491c4bc8d40587996d6ee2f447a7ccfb4f3\", \"lessThan\": \"4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"265c3491c4bc8d40587996d6ee2f447a7ccfb4f3\", \"lessThan\": \"abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"265c3491c4bc8d40587996d6ee2f447a7ccfb4f3\", \"lessThan\": \"a84df7c80bdac598d6ac9268ae578da6928883e8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"265c3491c4bc8d40587996d6ee2f447a7ccfb4f3\", \"lessThan\": \"9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/powerpc/include/asm/book3s/64/pgtable.h\", \"arch/powerpc/include/asm/fixmap.h\", \"arch/powerpc/include/asm/nohash/64/pgtable.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.5\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.5\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.37\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.11.21\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.11.*\"}, {\"status\": \"unaffected\", \"version\": \"5.12.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/powerpc/include/asm/book3s/64/pgtable.h\", \"arch/powerpc/include/asm/fixmap.h\", \"arch/powerpc/include/asm/nohash/64/pgtable.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd\"}, {\"url\": \"https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f\"}, {\"url\": \"https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8\"}, {\"url\": \"https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/64: Fix the definition of the fixmap area\\n\\nAt the time being, the fixmap area is defined at the top of\\nthe address space or just below KASAN.\\n\\nThis definition is not valid for PPC64.\\n\\nFor PPC64, use the top of the I/O space.\\n\\nBecause of circular dependencies, it is not possible to include\\nasm/fixmap.h in asm/book3s/64/pgtable.h , so define a fixed size\\nAREA at the top of the I/O space for fixmap and ensure during\\nbuild that the size is big enough.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.37\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.11.21\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.4\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"5.5\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:02:24.930Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47018\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:02:24.930Z\", \"dateReserved\": \"2024-02-27T18:42:55.954Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-28T08:13:33.362Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.