CVE-2025-38183 (GCVE-0-2025-38183)
Vulnerability from cvelistv5
Published
2025-07-04 13:37
Modified
2025-07-28 04:14
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get() Before calling lan743x_ptp_io_event_clock_get(), the 'channel' value is checked against the maximum value of PCI11X1X_PTP_IO_MAX_CHANNELS(8). This seems correct and aligns with the PTP interrupt status register (PTP_INT_STS) specifications. However, lan743x_ptp_io_event_clock_get() writes to ptp->extts[] with only LAN743X_PTP_N_EXTTS(4) elements, using channel as an index: lan743x_ptp_io_event_clock_get(..., u8 channel,...) { ... /* Update Local timestamp */ extts = &ptp->extts[channel]; extts->ts.tv_sec = sec; ... } To avoid an out-of-bounds write and utilize all the supported GPIO inputs, set LAN743X_PTP_N_EXTTS to 8. Detected using the static analysis tool - Svace.
References
Impacted products
Vendor Product Version
Linux Linux Version: 60942c397af6094c04406b77982314dfe69ef3c4
Version: 60942c397af6094c04406b77982314dfe69ef3c4
Version: 60942c397af6094c04406b77982314dfe69ef3c4
Version: 60942c397af6094c04406b77982314dfe69ef3c4
Version: 60942c397af6094c04406b77982314dfe69ef3c4
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microchip/lan743x_ptp.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e8d48201a132f4aab31351c19a802c5a5ae820fa",
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              "version": "60942c397af6094c04406b77982314dfe69ef3c4",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
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              "status": "affected",
              "version": "60942c397af6094c04406b77982314dfe69ef3c4",
              "versionType": "git"
            },
            {
              "lessThan": "e353b0854d3a1a31cb061df8d022fbfea53a0f24",
              "status": "affected",
              "version": "60942c397af6094c04406b77982314dfe69ef3c4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microchip/lan743x_ptp.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.95",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.142",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.95",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.35",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.4",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()\n\nBefore calling lan743x_ptp_io_event_clock_get(), the \u0027channel\u0027 value\nis checked against the maximum value of PCI11X1X_PTP_IO_MAX_CHANNELS(8).\nThis seems correct and aligns with the PTP interrupt status register\n(PTP_INT_STS) specifications.\n\nHowever, lan743x_ptp_io_event_clock_get() writes to ptp-\u003eextts[] with\nonly LAN743X_PTP_N_EXTTS(4) elements, using channel as an index:\n\n    lan743x_ptp_io_event_clock_get(..., u8 channel,...)\n    {\n        ...\n        /* Update Local timestamp */\n        extts = \u0026ptp-\u003eextts[channel];\n        extts-\u003ets.tv_sec = sec;\n        ...\n    }\n\nTo avoid an out-of-bounds write and utilize all the supported GPIO\ninputs, set LAN743X_PTP_N_EXTTS to 8.\n\nDetected using the static analysis tool - Svace."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:14:26.228Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e8d48201a132f4aab31351c19a802c5a5ae820fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/66bba1fd5bad548c03f7e42669a59f3f4d8211cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/41017bd66c533f7af912c58273c7dfd5de0065d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/4da0d23516857230b8e9b3022e25422ee2e2ba80"
        },
        {
          "url": "https://git.kernel.org/stable/c/e353b0854d3a1a31cb061df8d022fbfea53a0f24"
        }
      ],
      "title": "net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38183",
    "datePublished": "2025-07-04T13:37:10.253Z",
    "dateReserved": "2025-04-16T04:51:23.992Z",
    "dateUpdated": "2025-07-28T04:14:26.228Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38183\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-04T14:15:25.113\",\"lastModified\":\"2025-07-08T16:18:53.607\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()\\n\\nBefore calling lan743x_ptp_io_event_clock_get(), the \u0027channel\u0027 value\\nis checked against the maximum value of PCI11X1X_PTP_IO_MAX_CHANNELS(8).\\nThis seems correct and aligns with the PTP interrupt status register\\n(PTP_INT_STS) specifications.\\n\\nHowever, lan743x_ptp_io_event_clock_get() writes to ptp-\u003eextts[] with\\nonly LAN743X_PTP_N_EXTTS(4) elements, using channel as an index:\\n\\n    lan743x_ptp_io_event_clock_get(..., u8 channel,...)\\n    {\\n        ...\\n        /* Update Local timestamp */\\n        extts = \u0026ptp-\u003eextts[channel];\\n        extts-\u003ets.tv_sec = sec;\\n        ...\\n    }\\n\\nTo avoid an out-of-bounds write and utilize all the supported GPIO\\ninputs, set LAN743X_PTP_N_EXTTS to 8.\\n\\nDetected using the static analysis tool - Svace.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: lan743x: correcci\u00f3n de una posible escritura fuera de los l\u00edmites en lan743x_ptp_io_event_clock_get(). Antes de llamar a lan743x_ptp_io_event_clock_get(), el valor del canal se compara con el valor m\u00e1ximo de PCI11X1X_PTP_IO_MAX_CHANNELS(8). Esto parece correcto y se ajusta a las especificaciones del registro de estado de interrupci\u00f3n PTP (PTP_INT_STS). Sin embargo, lan743x_ptp_io_event_clock_get() escribe en ptp-\u0026gt;extts[] solo con elementos LAN743X_PTP_N_EXTTS(4), usando el canal como \u00edndice: lan743x_ptp_io_event_clock_get(..., u8 channel,...) { ... /* Actualizar marca de tiempo local */ extts = \u0026amp;ptp-\u0026gt;extts[channel]; extts-\u0026gt;ts.tv_sec = sec; ... } Para evitar una escritura fuera de los l\u00edmites y utilizar todas las entradas GPIO compatibles, configure LAN743X_PTP_N_EXTTS en 8. Detectado usando la herramienta de an\u00e1lisis est\u00e1tico - Svace.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/41017bd66c533f7af912c58273c7dfd5de0065d4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4da0d23516857230b8e9b3022e25422ee2e2ba80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/66bba1fd5bad548c03f7e42669a59f3f4d8211cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e353b0854d3a1a31cb061df8d022fbfea53a0f24\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e8d48201a132f4aab31351c19a802c5a5ae820fa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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