GSD-2024-26672

Vulnerability from gsd - Updated: 2024-02-20 06:02
Details
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()' Fixes the below: drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c:377 amdgpu_mca_smu_get_mca_entry() warn: variable dereferenced before check 'mca_funcs' (see line 368) 357 int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev, enum amdgpu_mca_error_type type, 358 int idx, struct mca_bank_entry *entry) 359 { 360 const struct amdgpu_mca_smu_funcs *mca_funcs = adev->mca.mca_funcs; 361 int count; 362 363 switch (type) { 364 case AMDGPU_MCA_ERROR_TYPE_UE: 365 count = mca_funcs->max_ue_count; mca_funcs is dereferenced here. 366 break; 367 case AMDGPU_MCA_ERROR_TYPE_CE: 368 count = mca_funcs->max_ce_count; mca_funcs is dereferenced here. 369 break; 370 default: 371 return -EINVAL; 372 } 373 374 if (idx >= count) 375 return -EINVAL; 376 377 if (mca_funcs && mca_funcs->mca_get_mca_entry) ^^^^^^^^^ Checked too late!
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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-26672"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix variable \u0027mca_funcs\u0027 dereferenced before NULL check in \u0027amdgpu_mca_smu_get_mca_entry()\u0027\n\nFixes the below:\n\ndrivers/gpu/drm/amd/amdgpu/amdgpu_mca.c:377 amdgpu_mca_smu_get_mca_entry() warn: variable dereferenced before check \u0027mca_funcs\u0027 (see line 368)\n\n357 int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev,\n\t\t\t\t     enum amdgpu_mca_error_type type,\n358                                  int idx, struct mca_bank_entry *entry)\n359 {\n360         const struct amdgpu_mca_smu_funcs *mca_funcs =\n\t\t\t\t\t\tadev-\u003emca.mca_funcs;\n361         int count;\n362\n363         switch (type) {\n364         case AMDGPU_MCA_ERROR_TYPE_UE:\n365                 count = mca_funcs-\u003emax_ue_count;\n\nmca_funcs is dereferenced here.\n\n366                 break;\n367         case AMDGPU_MCA_ERROR_TYPE_CE:\n368                 count = mca_funcs-\u003emax_ce_count;\n\nmca_funcs is dereferenced here.\n\n369                 break;\n370         default:\n371                 return -EINVAL;\n372         }\n373\n374         if (idx \u003e= count)\n375                 return -EINVAL;\n376\n377         if (mca_funcs \u0026\u0026 mca_funcs-\u003emca_get_mca_entry)\n\t        ^^^^^^^^^\n\nChecked too late!",
      "id": "GSD-2024-26672",
      "modified": "2024-02-20T06:02:29.077872Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2024-26672",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "1da177e4c3f4",
                          "version_value": "7b5d58c07024"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "lessThanOrEqual": "6.7.*",
                                "status": "unaffected",
                                "version": "6.7.4",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "*",
                                "status": "unaffected",
                                "version": "6.8",
                                "versionType": "original_commit_for_fix"
                              }
                            ]
                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Linux"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix variable \u0027mca_funcs\u0027 dereferenced before NULL check in \u0027amdgpu_mca_smu_get_mca_entry()\u0027\n\nFixes the below:\n\ndrivers/gpu/drm/amd/amdgpu/amdgpu_mca.c:377 amdgpu_mca_smu_get_mca_entry() warn: variable dereferenced before check \u0027mca_funcs\u0027 (see line 368)\n\n357 int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev,\n\t\t\t\t     enum amdgpu_mca_error_type type,\n358                                  int idx, struct mca_bank_entry *entry)\n359 {\n360         const struct amdgpu_mca_smu_funcs *mca_funcs =\n\t\t\t\t\t\tadev-\u003emca.mca_funcs;\n361         int count;\n362\n363         switch (type) {\n364         case AMDGPU_MCA_ERROR_TYPE_UE:\n365                 count = mca_funcs-\u003emax_ue_count;\n\nmca_funcs is dereferenced here.\n\n366                 break;\n367         case AMDGPU_MCA_ERROR_TYPE_CE:\n368                 count = mca_funcs-\u003emax_ce_count;\n\nmca_funcs is dereferenced here.\n\n369                 break;\n370         default:\n371                 return -EINVAL;\n372         }\n373\n374         if (idx \u003e= count)\n375                 return -EINVAL;\n376\n377         if (mca_funcs \u0026\u0026 mca_funcs-\u003emca_get_mca_entry)\n\t        ^^^^^^^^^\n\nChecked too late!"
          }
        ]
      },
      "generator": {
        "engine": "bippy-b4257b672505"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/7b5d58c07024516c0e81b95e98f37710cf402c53",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/7b5d58c07024516c0e81b95e98f37710cf402c53"
          },
          {
            "name": "https://git.kernel.org/stable/c/4f32504a2f85a7b40fe149436881381f48e9c0c0",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/4f32504a2f85a7b40fe149436881381f48e9c0c0"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix variable \u0027mca_funcs\u0027 dereferenced before NULL check in \u0027amdgpu_mca_smu_get_mca_entry()\u0027\n\nFixes the below:\n\ndrivers/gpu/drm/amd/amdgpu/amdgpu_mca.c:377 amdgpu_mca_smu_get_mca_entry() warn: variable dereferenced before check \u0027mca_funcs\u0027 (see line 368)\n\n357 int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev,\n\t\t\t\t     enum amdgpu_mca_error_type type,\n358                                  int idx, struct mca_bank_entry *entry)\n359 {\n360         const struct amdgpu_mca_smu_funcs *mca_funcs =\n\t\t\t\t\t\tadev-\u003emca.mca_funcs;\n361         int count;\n362\n363         switch (type) {\n364         case AMDGPU_MCA_ERROR_TYPE_UE:\n365                 count = mca_funcs-\u003emax_ue_count;\n\nmca_funcs is dereferenced here.\n\n366                 break;\n367         case AMDGPU_MCA_ERROR_TYPE_CE:\n368                 count = mca_funcs-\u003emax_ce_count;\n\nmca_funcs is dereferenced here.\n\n369                 break;\n370         default:\n371                 return -EINVAL;\n372         }\n373\n374         if (idx \u003e= count)\n375                 return -EINVAL;\n376\n377         if (mca_funcs \u0026\u0026 mca_funcs-\u003emca_get_mca_entry)\n\t        ^^^^^^^^^\n\nChecked too late!"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amdgpu: corrige la variable \u0027mca_funcs\u0027 desreferenciada antes de la comprobaci\u00f3n NULL en \u0027amdgpu_mca_smu_get_mca_entry()\u0027 Corrige lo siguiente: drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c:377 amdgpu_mca_smu_get_mca_entry() advertencia: variable desreferenciada antes de verificar \u0027mca_funcs\u0027 (ver l\u00ednea 368) 357 int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev, enum amdgpu_mca_error_type type, 358 int idx, struct mca_bank_entry *entry) 359 { 360 const struct amdgpu_mca_smu_funcs *mca_funcs = adev- \u0026gt;mca.mca_funcs; 361 recuentos internacionales; 362 363 interruptor (tipo) { 364 caso AMDGPU_MCA_ERROR_TYPE_UE: 365 recuento = mca_funcs-\u0026gt;max_ue_count; Aqu\u00ed se elimina la referencia a mca_funcs. 366 descanso; 367 caso AMDGPU_MCA_ERROR_TYPE_CE: 368 recuento = mca_funcs-\u0026gt;max_ce_count; Aqu\u00ed se elimina la referencia a mca_funcs. 369 descanso; 370 predeterminado: 371 retorno -EINVAL; 372 } 373 374 si (idx \u0026gt;= recuento) 375 retorno -EINVAL; 376 377 if (mca_funcs \u0026amp;\u0026amp; mca_funcs-\u0026gt;mca_get_mca_entry) ^^^^^^^^^ \u00a1Comprobado demasiado tarde!"
          }
        ],
        "id": "CVE-2024-26672",
        "lastModified": "2024-04-02T12:50:42.233",
        "metrics": {},
        "published": "2024-04-02T07:15:43.900",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/4f32504a2f85a7b40fe149436881381f48e9c0c0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7b5d58c07024516c0e81b95e98f37710cf402c53"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}


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  • 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.
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