CVE-2023-52996 (GCVE-0-2023-52996)
Vulnerability from cvelistv5
Published
2025-03-27 16:43
Modified
2025-05-04 07:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv4: prevent potential spectre v1 gadget in fib_metrics_match() if (!type) continue; if (type > RTAX_MAX) return false; ... fi_val = fi->fib_metrics->metrics[type - 1]; @type being used as an array index, we need to prevent cpu speculation or risk leaking kernel memory content.
References
Impacted products
Vendor Product Version
Linux Linux Version: 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8
Version: 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8
Version: 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8
Version: 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8
Version: 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/fib_semantics.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "6.1.9",
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              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              ],
              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: prevent potential spectre v1 gadget in fib_metrics_match()\n\nif (!type)\n        continue;\n    if (type \u003e RTAX_MAX)\n        return false;\n    ...\n    fi_val = fi-\u003efib_metrics-\u003emetrics[type - 1];\n\n@type being used as an array index, we need to prevent\ncpu speculation or risk leaking kernel memory content."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:47:10.247Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d"
        },
        {
          "url": "https://git.kernel.org/stable/c/7f9828fb1f688210e681268490576f0ca65c322a"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/f9753ebd61be2d957b5504cbd3fd719674f05b7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/5e9398a26a92fc402d82ce1f97cc67d832527da0"
        }
      ],
      "title": "ipv4: prevent potential spectre v1 gadget in fib_metrics_match()",
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52996",
    "datePublished": "2025-03-27T16:43:30.547Z",
    "dateReserved": "2025-03-27T16:40:15.742Z",
    "dateUpdated": "2025-05-04T07:47:10.247Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52996\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-27T17:15:48.310\",\"lastModified\":\"2025-03-28T18:11:49.747\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv4: prevent potential spectre v1 gadget in fib_metrics_match()\\n\\nif (!type)\\n        continue;\\n    if (type \u003e RTAX_MAX)\\n        return false;\\n    ...\\n    fi_val = fi-\u003efib_metrics-\u003emetrics[type - 1];\\n\\n@type being used as an array index, we need to prevent\\ncpu speculation or risk leaking kernel memory content.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv4: evitar un potencial gadget spectre v1 en fib_metrics_match() if (!type) continue; if (type \u0026gt; RTAX_MAX) return false; ... fi_val = fi-\u0026gt;fib_metrics-\u0026gt;metrics[type - 1]; @type se utiliza como un \u00edndice de matriz, debemos evitar la especulaci\u00f3n de la CPU o corremos el riesgo de filtrar el contenido de la memoria del kernel.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5e9398a26a92fc402d82ce1f97cc67d832527da0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7f9828fb1f688210e681268490576f0ca65c322a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ca3cf947760de050d558293002ad3e7f4b8745d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f9753ebd61be2d957b5504cbd3fd719674f05b7a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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