CVE-2022-49743 (GCVE-0-2022-49743)
Vulnerability from cvelistv5
Published
2025-03-27 16:42
Modified
2025-05-04 08:44
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ovl: Use "buf" flexible array for memcpy() destination The "buf" flexible array needs to be the memcpy() destination to avoid false positive run-time warning from the recent FORTIFY_SOURCE hardening: memcpy: detected field-spanning write (size 93) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/overlayfs/export.c",
            "fs/overlayfs/overlayfs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "a77141a06367825d639ac51b04703d551163e36c",
              "status": "affected",
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              "versionType": "git"
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              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
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        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.93",
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                },
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                  "vulnerable": true
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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\novl: Use \"buf\" flexible array for memcpy() destination\n\nThe \"buf\" flexible array needs to be the memcpy() destination to avoid\nfalse positive run-time warning from the recent FORTIFY_SOURCE\nhardening:\n\n  memcpy: detected field-spanning write (size 93) of single field \"\u0026fh-\u003efb\"\n  at fs/overlayfs/export.c:799 (size 21)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:44:26.260Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a77141a06367825d639ac51b04703d551163e36c"
        },
        {
          "url": "https://git.kernel.org/stable/c/07a96977b2f462337a9121302de64277b8747ab1"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf8aa9bf97cadf85745506c6a3e244b22c268d63"
        }
      ],
      "title": "ovl: Use \"buf\" flexible array for memcpy() destination",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49743",
    "datePublished": "2025-03-27T16:42:54.289Z",
    "dateReserved": "2025-03-27T16:39:17.987Z",
    "dateUpdated": "2025-05-04T08:44:26.260Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49743\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-27T17:15:38.967\",\"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\\novl: Use \\\"buf\\\" flexible array for memcpy() destination\\n\\nThe \\\"buf\\\" flexible array needs to be the memcpy() destination to avoid\\nfalse positive run-time warning from the recent FORTIFY_SOURCE\\nhardening:\\n\\n  memcpy: detected field-spanning write (size 93) of single field \\\"\u0026fh-\u003efb\\\"\\n  at fs/overlayfs/export.c:799 (size 21)\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ovl: Usar la matriz flexible \\\"buf\\\" para el destino de memcpy() La matriz flexible \\\"buf\\\" debe ser el destino de memcpy() para evitar una advertencia de tiempo de ejecuci\u00f3n de falsos positivos del reciente endurecimiento de FORTIFY_SOURCE: memcpy: se detect\u00f3 una escritura que abarca el campo (tama\u00f1o 93) de un solo campo \\\"\u0026amp;fh-\u0026gt;fb\\\" en fs/overlayfs/export.c:799 (tama\u00f1o 21)\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/07a96977b2f462337a9121302de64277b8747ab1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a77141a06367825d639ac51b04703d551163e36c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cf8aa9bf97cadf85745506c6a3e244b22c268d63\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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