nvd-json-data-feeds/CVE-2024/CVE-2024-567xx/CVE-2024-56712.json

{
  "id": "CVE-2024-56712",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-12-29T09:15:06.250",
  "lastModified": "2025-01-06T17:11:48.987",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nudmabuf: fix memory leak on last export_udmabuf() error path\n\nIn export_udmabuf(), if dma_buf_fd() fails because the FD table is full, a\ndma_buf owning the udmabuf has already been created; but the error handling\nin udmabuf_create() will tear down the udmabuf without doing anything about\nthe containing dma_buf.\n\nThis leaves a dma_buf in memory that contains a dangling pointer; though\nthat doesn't seem to lead to anything bad except a memory leak.\n\nFix it by moving the dma_buf_fd() call out of export_udmabuf() so that we\ncan give it different error handling.\n\nNote that the shape of this code changed a lot in commit 5e72b2b41a21\n(\"udmabuf: convert udmabuf driver to use folios\"); but the memory leak\nseems to have existed since the introduction of udmabuf."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: udmabuf: reparar p\u00e9rdida de memoria en la \u00faltima ruta de error export_udmabuf() En export_udmabuf(), si dma_buf_fd() falla porque la tabla FD est\u00e1 llena, ya se ha creado un dma_buf que posee el udmabuf; pero la gesti\u00f3n de errores en udmabuf_create() destruir\u00e1 el udmabuf sin hacer nada con el dma_buf que lo contiene. Esto deja un dma_buf en la memoria que contiene un puntero colgante; aunque eso no parece conducir a nada malo excepto a una p\u00e9rdida de memoria. Arr\u00e9glelo moviendo la llamada dma_buf_fd() fuera de export_udmabuf() para que podamos darle un gesti\u00f3n de errores diferente. Tenga en cuenta que la forma de este c\u00f3digo cambi\u00f3 mucho en el commit 5e72b2b41a21 (\"udmabuf: convertir el controlador udmabuf para usar folios\"); Pero la p\u00e9rdida de memoria parece haber existido desde la introducci\u00f3n de udmabuf."
    }
  ],
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    "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",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
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  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
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  "references": [
    {
      "url": "https://git.kernel.org/stable/c/c9fc8428d4255c2128da9c4d5cd92e554d0150cf",
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