CVE-2024-40974 (GCVE-0-2024-40974)
Vulnerability from cvelistv5
Published
2024-07-12 12:32
Modified
2025-11-03 21:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Enforce hcall result buffer validity and size plpar_hcall(), plpar_hcall9(), and related functions expect callers to provide valid result buffers of certain minimum size. Currently this is communicated only through comments in the code and the compiler has no idea. For example, if I write a bug like this: long retbuf[PLPAR_HCALL_BUFSIZE]; // should be PLPAR_HCALL9_BUFSIZE plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, ...); This compiles with no diagnostics emitted, but likely results in stack corruption at runtime when plpar_hcall9() stores results past the end of the array. (To be clear this is a contrived example and I have not found a real instance yet.) To make this class of error less likely, we can use explicitly-sized array parameters instead of pointers in the declarations for the hcall APIs. When compiled with -Warray-bounds[1], the code above now provokes a diagnostic like this: error: array argument is too small; is of size 32, callee requires at least 72 [-Werror,-Warray-bounds] 60 | plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, | ^ ~~~~~~ [1] Enabled for LLVM builds but not GCC for now. See commit 0da6e5fd6c37 ("gcc: disable '-Warray-bounds' for gcc-13 too") and related changes.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/19c166ee42cf16d8b156a6cb4544122d9a65d3ca Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/262e942ff5a839b9e4f3302a8987928b0c8b8a2d Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/3ad0034910a57aa88ed9976b1431b7b8c84e0048 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/8aa11aa001576bf3b00dcb8559564ad7a3113588 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/a8c988d752b3d98d5cc1e3929c519a55ef55426c Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/aa6107dcc4ce9a3451f2d729204713783b657257 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/acf2b80c31c37acab040baa3cf5f19fbd5140b18 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/ff2e185cf73df480ec69675936c4ee75a445c3e4 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/19c166ee42cf16d8b156a6cb4544122d9a65d3ca Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/262e942ff5a839b9e4f3302a8987928b0c8b8a2d Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/3ad0034910a57aa88ed9976b1431b7b8c84e0048 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/8aa11aa001576bf3b00dcb8559564ad7a3113588 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/a8c988d752b3d98d5cc1e3929c519a55ef55426c Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/aa6107dcc4ce9a3451f2d729204713783b657257 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/acf2b80c31c37acab040baa3cf5f19fbd5140b18 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/ff2e185cf73df480ec69675936c4ee75a445c3e4 Patch
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T21:58:39.132Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/acf2b80c31c37acab040baa3cf5f19fbd5140b18"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/19c166ee42cf16d8b156a6cb4544122d9a65d3ca"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a8c988d752b3d98d5cc1e3929c519a55ef55426c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/262e942ff5a839b9e4f3302a8987928b0c8b8a2d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8aa11aa001576bf3b00dcb8559564ad7a3113588"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3ad0034910a57aa88ed9976b1431b7b8c84e0048"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/aa6107dcc4ce9a3451f2d729204713783b657257"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/ff2e185cf73df480ec69675936c4ee75a445c3e4"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-40974",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T17:02:44.463070Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:34:22.210Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/include/asm/hvcall.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "acf2b80c31c37acab040baa3cf5f19fbd5140b18",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "19c166ee42cf16d8b156a6cb4544122d9a65d3ca",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "a8c988d752b3d98d5cc1e3929c519a55ef55426c",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "262e942ff5a839b9e4f3302a8987928b0c8b8a2d",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "8aa11aa001576bf3b00dcb8559564ad7a3113588",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "3ad0034910a57aa88ed9976b1431b7b8c84e0048",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "aa6107dcc4ce9a3451f2d729204713783b657257",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ff2e185cf73df480ec69675936c4ee75a445c3e4",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/include/asm/hvcall.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.317",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.279",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.96",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.317",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.279",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.221",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.162",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.96",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.36",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries: Enforce hcall result buffer validity and size\n\nplpar_hcall(), plpar_hcall9(), and related functions expect callers to\nprovide valid result buffers of certain minimum size. Currently this\nis communicated only through comments in the code and the compiler has\nno idea.\n\nFor example, if I write a bug like this:\n\n  long retbuf[PLPAR_HCALL_BUFSIZE]; // should be PLPAR_HCALL9_BUFSIZE\n  plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, ...);\n\nThis compiles with no diagnostics emitted, but likely results in stack\ncorruption at runtime when plpar_hcall9() stores results past the end\nof the array. (To be clear this is a contrived example and I have not\nfound a real instance yet.)\n\nTo make this class of error less likely, we can use explicitly-sized\narray parameters instead of pointers in the declarations for the hcall\nAPIs. When compiled with -Warray-bounds[1], the code above now\nprovokes a diagnostic like this:\n\nerror: array argument is too small;\nis of size 32, callee requires at least 72 [-Werror,-Warray-bounds]\n   60 |                 plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf,\n      |                 ^                                   ~~~~~~\n\n[1] Enabled for LLVM builds but not GCC for now. See commit\n    0da6e5fd6c37 (\"gcc: disable \u0027-Warray-bounds\u0027 for gcc-13 too\") and\n    related changes."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T09:19:09.345Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/acf2b80c31c37acab040baa3cf5f19fbd5140b18"
        },
        {
          "url": "https://git.kernel.org/stable/c/19c166ee42cf16d8b156a6cb4544122d9a65d3ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/a8c988d752b3d98d5cc1e3929c519a55ef55426c"
        },
        {
          "url": "https://git.kernel.org/stable/c/262e942ff5a839b9e4f3302a8987928b0c8b8a2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/8aa11aa001576bf3b00dcb8559564ad7a3113588"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ad0034910a57aa88ed9976b1431b7b8c84e0048"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa6107dcc4ce9a3451f2d729204713783b657257"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff2e185cf73df480ec69675936c4ee75a445c3e4"
        }
      ],
      "title": "powerpc/pseries: Enforce hcall result buffer validity and size",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-40974",
    "datePublished": "2024-07-12T12:32:11.417Z",
    "dateReserved": "2024-07-12T12:17:45.603Z",
    "dateUpdated": "2025-11-03T21:58:39.132Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-40974\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:18.943\",\"lastModified\":\"2025-11-03T22:17:19.287\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/pseries: Enforce hcall result buffer validity and size\\n\\nplpar_hcall(), plpar_hcall9(), and related functions expect callers to\\nprovide valid result buffers of certain minimum size. Currently this\\nis communicated only through comments in the code and the compiler has\\nno idea.\\n\\nFor example, if I write a bug like this:\\n\\n  long retbuf[PLPAR_HCALL_BUFSIZE]; // should be PLPAR_HCALL9_BUFSIZE\\n  plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, ...);\\n\\nThis compiles with no diagnostics emitted, but likely results in stack\\ncorruption at runtime when plpar_hcall9() stores results past the end\\nof the array. (To be clear this is a contrived example and I have not\\nfound a real instance yet.)\\n\\nTo make this class of error less likely, we can use explicitly-sized\\narray parameters instead of pointers in the declarations for the hcall\\nAPIs. When compiled with -Warray-bounds[1], the code above now\\nprovokes a diagnostic like this:\\n\\nerror: array argument is too small;\\nis of size 32, callee requires at least 72 [-Werror,-Warray-bounds]\\n   60 |                 plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf,\\n      |                 ^                                   ~~~~~~\\n\\n[1] Enabled for LLVM builds but not GCC for now. See commit\\n    0da6e5fd6c37 (\\\"gcc: disable \u0027-Warray-bounds\u0027 for gcc-13 too\\\") and\\n    related changes.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/pseries: aplica la validez y el tama\u00f1o del b\u00fafer de resultados de hcall plpar_hcall(), plpar_hcall9() y las funciones relacionadas esperan que los llamadores proporcionen b\u00faferes de resultados v\u00e1lidos de cierto tama\u00f1o m\u00ednimo. Actualmente esto se comunica s\u00f3lo a trav\u00e9s de comentarios en el c\u00f3digo y el compilador no tiene idea. Por ejemplo, si escribo un error como este: long retbuf[PLPAR_HCALL_BUFSIZE]; // deber\u00eda ser PLPAR_HCALL9_BUFSIZE plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, ...); Esto se compila sin emitir diagn\u00f3sticos, pero probablemente da como resultado da\u00f1os en la pila en tiempo de ejecuci\u00f3n cuando plpar_hcall9() almacena los resultados m\u00e1s all\u00e1 del final de la matriz. (Para ser claros, este es un ejemplo artificial y todav\u00eda no he encontrado una instancia real). Para hacer que esta clase de error sea menos probable, podemos usar par\u00e1metros de matriz de tama\u00f1o expl\u00edcito en lugar de punteros en las declaraciones de las API hcall. Cuando se compila con -Warray-bounds[1], el c\u00f3digo anterior ahora provoca un diagn\u00f3stico como este: error: el argumento de la matriz es demasiado peque\u00f1o; es de tama\u00f1o 32, el destinatario requiere al menos 72 [-Werror,-Warray-bounds] 60 | plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, | ^ ~~~~~~ [1] Habilitado para compilaciones LLVM pero no para GCC por ahora. Consulte El commit 0da6e5fd6c37 (\\\"gcc: deshabilite \u0027-Warray-bounds\u0027 para gcc-13 tambi\u00e9n\\\") y relacionados cambios.\"}],\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.19.317\",\"matchCriteriaId\":\"AD25C2E5-C116-4160-BA6D-CE9B0D10AE3E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.279\",\"matchCriteriaId\":\"F4E38E58-1B9F-4DF2-AD3D-A8BEAA2959D8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.221\",\"matchCriteriaId\":\"659E1520-6345-41AF-B893-A7C0647585A0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.162\",\"matchCriteriaId\":\"10A39ACC-3005-40E8-875C-98A372D1FFD5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.96\",\"matchCriteriaId\":\"61E887B4-732A-40D2-9983-CC6F281EBFB7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.36\",\"matchCriteriaId\":\"E1046C95-860A-45B0-B718-2B29F65BFF10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.7\",\"matchCriteriaId\":\"0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/19c166ee42cf16d8b156a6cb4544122d9a65d3ca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/262e942ff5a839b9e4f3302a8987928b0c8b8a2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3ad0034910a57aa88ed9976b1431b7b8c84e0048\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8aa11aa001576bf3b00dcb8559564ad7a3113588\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a8c988d752b3d98d5cc1e3929c519a55ef55426c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/aa6107dcc4ce9a3451f2d729204713783b657257\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/acf2b80c31c37acab040baa3cf5f19fbd5140b18\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ff2e185cf73df480ec69675936c4ee75a445c3e4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/19c166ee42cf16d8b156a6cb4544122d9a65d3ca\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/262e942ff5a839b9e4f3302a8987928b0c8b8a2d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3ad0034910a57aa88ed9976b1431b7b8c84e0048\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8aa11aa001576bf3b00dcb8559564ad7a3113588\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a8c988d752b3d98d5cc1e3929c519a55ef55426c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/aa6107dcc4ce9a3451f2d729204713783b657257\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/acf2b80c31c37acab040baa3cf5f19fbd5140b18\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ff2e185cf73df480ec69675936c4ee75a445c3e4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/acf2b80c31c37acab040baa3cf5f19fbd5140b18\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/19c166ee42cf16d8b156a6cb4544122d9a65d3ca\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a8c988d752b3d98d5cc1e3929c519a55ef55426c\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/262e942ff5a839b9e4f3302a8987928b0c8b8a2d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/8aa11aa001576bf3b00dcb8559564ad7a3113588\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/3ad0034910a57aa88ed9976b1431b7b8c84e0048\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/aa6107dcc4ce9a3451f2d729204713783b657257\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ff2e185cf73df480ec69675936c4ee75a445c3e4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T21:58:39.132Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-40974\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:02:44.463070Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:22.252Z\"}}], \"cna\": {\"title\": \"powerpc/pseries: Enforce hcall result buffer validity and size\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"acf2b80c31c37acab040baa3cf5f19fbd5140b18\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"19c166ee42cf16d8b156a6cb4544122d9a65d3ca\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"a8c988d752b3d98d5cc1e3929c519a55ef55426c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"262e942ff5a839b9e4f3302a8987928b0c8b8a2d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"8aa11aa001576bf3b00dcb8559564ad7a3113588\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"3ad0034910a57aa88ed9976b1431b7b8c84e0048\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"aa6107dcc4ce9a3451f2d729204713783b657257\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"ff2e185cf73df480ec69675936c4ee75a445c3e4\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/powerpc/include/asm/hvcall.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"4.19.317\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.279\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.221\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.162\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.96\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.36\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/powerpc/include/asm/hvcall.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/acf2b80c31c37acab040baa3cf5f19fbd5140b18\"}, {\"url\": \"https://git.kernel.org/stable/c/19c166ee42cf16d8b156a6cb4544122d9a65d3ca\"}, {\"url\": \"https://git.kernel.org/stable/c/a8c988d752b3d98d5cc1e3929c519a55ef55426c\"}, {\"url\": \"https://git.kernel.org/stable/c/262e942ff5a839b9e4f3302a8987928b0c8b8a2d\"}, {\"url\": \"https://git.kernel.org/stable/c/8aa11aa001576bf3b00dcb8559564ad7a3113588\"}, {\"url\": \"https://git.kernel.org/stable/c/3ad0034910a57aa88ed9976b1431b7b8c84e0048\"}, {\"url\": \"https://git.kernel.org/stable/c/aa6107dcc4ce9a3451f2d729204713783b657257\"}, {\"url\": \"https://git.kernel.org/stable/c/ff2e185cf73df480ec69675936c4ee75a445c3e4\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/pseries: Enforce hcall result buffer validity and size\\n\\nplpar_hcall(), plpar_hcall9(), and related functions expect callers to\\nprovide valid result buffers of certain minimum size. Currently this\\nis communicated only through comments in the code and the compiler has\\nno idea.\\n\\nFor example, if I write a bug like this:\\n\\n  long retbuf[PLPAR_HCALL_BUFSIZE]; // should be PLPAR_HCALL9_BUFSIZE\\n  plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, ...);\\n\\nThis compiles with no diagnostics emitted, but likely results in stack\\ncorruption at runtime when plpar_hcall9() stores results past the end\\nof the array. (To be clear this is a contrived example and I have not\\nfound a real instance yet.)\\n\\nTo make this class of error less likely, we can use explicitly-sized\\narray parameters instead of pointers in the declarations for the hcall\\nAPIs. When compiled with -Warray-bounds[1], the code above now\\nprovokes a diagnostic like this:\\n\\nerror: array argument is too small;\\nis of size 32, callee requires at least 72 [-Werror,-Warray-bounds]\\n   60 |                 plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf,\\n      |                 ^                                   ~~~~~~\\n\\n[1] Enabled for LLVM builds but not GCC for now. See commit\\n    0da6e5fd6c37 (\\\"gcc: disable \u0027-Warray-bounds\u0027 for gcc-13 too\\\") and\\n    related changes.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.317\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.279\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.221\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.162\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.96\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:19:09.345Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40974\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T21:58:39.132Z\", \"dateReserved\": \"2024-07-12T12:17:45.603Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:32:11.417Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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 seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.