fkie_cve-2024-46741
Vulnerability from fkie_nvd
Published
2024-09-18 08:15
Modified
2024-09-20 18:33
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix double free of 'buf' in error path smatch warning: drivers/misc/fastrpc.c:1926 fastrpc_req_mmap() error: double free of 'buf' In fastrpc_req_mmap() error path, the fastrpc buffer is freed in fastrpc_req_munmap_impl() if unmap is successful. But in the end, there is an unconditional call to fastrpc_buf_free(). So the above case triggers the double free of fastrpc buf.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bfc1704d909dc9911a558b1a5833d3d61a43a1f2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e8c276d4dc0e19ee48385f74426aebc855b49aafPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f77dc8a75859e559f3238a6d906206259227985ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix double free of \u0027buf\u0027 in error path\n\nsmatch warning:\ndrivers/misc/fastrpc.c:1926 fastrpc_req_mmap() error: double free of \u0027buf\u0027\n\nIn fastrpc_req_mmap() error path, the fastrpc buffer is freed in\nfastrpc_req_munmap_impl() if unmap is successful.\n\nBut in the end, there is an unconditional call to fastrpc_buf_free().\nSo the above case triggers the double free of fastrpc buf."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: misc: fastrpc: Fix double free of \u0027buf\u0027 in error path smatch Warning: drivers/misc/fastrpc.c:1926 fastrpc_req_mmap() error: double free of \u0027buf\u0027 En la ruta de error fastrpc_req_mmap(), el b\u00fafer fastrpc se libera en fastrpc_req_munmap_impl() si la anulaci\u00f3n del mapa se realiza correctamente. Pero al final, hay una llamada incondicional a fastrpc_buf_free(). Por lo tanto, el caso anterior activa la doble liberaci\u00f3n del b\u00fafer fastrpc."
    }
  ],
  "id": "CVE-2024-46741",
  "lastModified": "2024-09-20T18:33:27.960",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-09-18T08:15:03.430",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/bfc1704d909dc9911a558b1a5833d3d61a43a1f2"
    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-415"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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