cve-2024-43824
Vulnerability from cvelistv5
Published
2024-08-17 09:21
Modified
2024-12-19 09:16
Severity ?
Summary
PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init()
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-43824",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T16:08:51.186456Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:33:24.560Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/endpoint/functions/pci-epf-test.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "af4ad016abb1632ff7ee598a6037952b495e5b80",
              "status": "affected",
              "version": "5e50ee27d4a52a817ab152128c48690ec7c5cdf1",
              "versionType": "git"
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              "lessThan": "5a5095a8bd1bd349cce1c879e5e44407a34dda8a",
              "status": "affected",
              "version": "5e50ee27d4a52a817ab152128c48690ec7c5cdf1",
              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/endpoint/functions/pci-epf-test.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-test: Make use of cached \u0027epc_features\u0027 in pci_epf_test_core_init()\n\nInstead of getting the epc_features from pci_epc_get_features() API, use\nthe cached pci_epf_test::epc_features value to avoid the NULL check. Since\nthe NULL check is already performed in pci_epf_test_bind(), having one more\ncheck in pci_epf_test_core_init() is redundant and it is not possible to\nhit the NULL pointer dereference.\n\nAlso with commit a01e7214bef9 (\"PCI: endpoint: Remove \"core_init_notifier\"\nflag\"), \u0027epc_features\u0027 got dereferenced without the NULL check, leading to\nthe following false positive Smatch warning:\n\n  drivers/pci/endpoint/functions/pci-epf-test.c:784 pci_epf_test_core_init() error: we previously assumed \u0027epc_features\u0027 could be null (see line 747)\n\nThus, remove the redundant NULL check and also use the epc_features::\n{msix_capable/msi_capable} flags directly to avoid local variables.\n\n[kwilczynski: commit log]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:16:35.372Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/af4ad016abb1632ff7ee598a6037952b495e5b80"
        },
        {
          "url": "https://git.kernel.org/stable/c/5a5095a8bd1bd349cce1c879e5e44407a34dda8a"
        }
      ],
      "title": "PCI: endpoint: pci-epf-test: Make use of cached \u0027epc_features\u0027 in pci_epf_test_core_init()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-43824",
    "datePublished": "2024-08-17T09:21:44.483Z",
    "dateReserved": "2024-08-17T09:11:59.272Z",
    "dateUpdated": "2024-12-19T09:16:35.372Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-43824\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-17T10:15:08.477\",\"lastModified\":\"2024-09-03T17:48:39.160\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nPCI: endpoint: pci-epf-test: Make use of cached \u0027epc_features\u0027 in pci_epf_test_core_init()\\n\\nInstead of getting the epc_features from pci_epc_get_features() API, use\\nthe cached pci_epf_test::epc_features value to avoid the NULL check. Since\\nthe NULL check is already performed in pci_epf_test_bind(), having one more\\ncheck in pci_epf_test_core_init() is redundant and it is not possible to\\nhit the NULL pointer dereference.\\n\\nAlso with commit a01e7214bef9 (\\\"PCI: endpoint: Remove \\\"core_init_notifier\\\"\\nflag\\\"), \u0027epc_features\u0027 got dereferenced without the NULL check, leading to\\nthe following false positive Smatch warning:\\n\\n  drivers/pci/endpoint/functions/pci-epf-test.c:784 pci_epf_test_core_init() error: we previously assumed \u0027epc_features\u0027 could be null (see line 747)\\n\\nThus, remove the redundant NULL check and also use the epc_features::\\n{msix_capable/msi_capable} flags directly to avoid local variables.\\n\\n[kwilczynski: commit log]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PCI: endpoint: pci-epf-test: utilice \u0027epc_features\u0027 en cach\u00e9 en pci_epf_test_core_init() En lugar de obtener epc_features de la API pci_epc_get_features(), utilice pci_epf_test en cach\u00e9:: Valor epc_features para evitar la verificaci\u00f3n NULL. Dado que la verificaci\u00f3n NULL ya se realiza en pci_epf_test_bind(), tener una verificaci\u00f3n m\u00e1s en pci_epf_test_core_init() es redundante y no es posible alcanzar la desreferencia del puntero NULL. Adem\u00e1s, con el commit a01e7214bef9 (\\\"PCI: endpoint: Remove \\\"core_init_notifier\\\" flag\\\"), se elimin\u00f3 la referencia a \u0027epc_features\u0027 sin la verificaci\u00f3n NULL, lo que gener\u00f3 la siguiente advertencia de falso positivo Smatch: drivers/pci/endpoint/functions/pci-epf-test .c:784 Error de pci_epf_test_core_init(): anteriormente asumimos que \u0027epc_features\u0027 podr\u00eda ser nulo (consulte la l\u00ednea 747). Por lo tanto, elimine la verificaci\u00f3n NULL redundante y tambi\u00e9n use los indicadores epc_features:: {msix_capable/msi_capable} directamente para evitar variables locales. [kwilczynski: registro de confirmaci\u00f3n]\"}],\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.7\",\"versionEndExcluding\":\"6.10.3\",\"matchCriteriaId\":\"BDEF183E-5F26-49C1-B426-CB56F8FC5A31\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5a5095a8bd1bd349cce1c879e5e44407a34dda8a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/af4ad016abb1632ff7ee598a6037952b495e5b80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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