FKIE_CVE-2019-3837

Vulnerability from fkie_nvd - Published: 2019-04-11 15:29 - Updated: 2026-06-17 02:35
Severity
6.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Summary
It was found that the net_dma code in tcp_recvmsg() in the 2.6.32 kernel as shipped in RHEL6 is thread-unsafe. So an unprivileged multi-threaded userspace application calling recvmsg() for the same network socket in parallel executed on ioatdma-enabled hardware with net_dma enabled can leak the memory, crash the host leading to a denial-of-service or cause a random memory corruption.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3837Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3837Issue Tracking, Patch, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel 2.6.32
redhat enterprise_linux 6.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "kernel",
          "vendor": "The Linux Foundation",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.32 as shipped in rhel-6"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
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              "vulnerable": true
            }
          ],
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        }
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    {
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "It was found that the net_dma code in tcp_recvmsg() in the 2.6.32 kernel as shipped in RHEL6 is thread-unsafe. So an unprivileged multi-threaded userspace application calling recvmsg() for the same network socket in parallel executed on ioatdma-enabled hardware with net_dma enabled can leak the memory, crash the host leading to a denial-of-service or cause a random memory corruption."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 que el c\u00f3digo net_dma en la funci\u00f3n tcp_recvmsg() en el kernel versi\u00f3n 2.6.32 tal como fue enviado en RHEL6 es no seguro para subprocesos. En consecuencia, una aplicaci\u00f3n de espacio de usuario multihebra sin privilegios que llama a recvmsg() para el mismo socket de red en paralelo ejecutado en hardware habilitado para ioatdma con net_dma habilitado puede perder la memoria, bloquear el host y causar una denegaci\u00f3n de servicio o causar un da\u00f1o aleatorio en la memoria ."
    }
  ],
  "id": "CVE-2019-3837",
  "lastModified": "2026-06-17T02:35:41.640",
  "metrics": {
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 4.9,
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          "version": "2.0"
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        "obtainAllPrivilege": false,
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        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
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  "published": "2019-04-11T15:29:00.447",
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  "vulnStatus": "Modified",
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        {
          "lang": "en",
          "value": "CWE-362"
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          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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