GSD-2023-6121

Vulnerability from gsd - Updated: 2023-12-13 01:20
Details
An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This flaw allows a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data to be printed (and potentially leaked) to the kernel ring buffer (dmesg).
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2023-6121",
    "id": "GSD-2023-6121"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-6121"
      ],
      "details": "An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This flaw allows a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data to be printed (and potentially leaked) to the kernel ring buffer (dmesg).",
      "id": "GSD-2023-6121",
      "modified": "2023-12-13T01:20:32.946616Z",
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    }
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        "ID": "CVE-2023-6121",
        "STATE": "PUBLIC"
      },
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              "product": {
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                    "version": {
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      "credits": [
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          "lang": "en",
          "value": "Red Hat would like to thank Alon Zahavi for reporting this issue."
        }
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      "data_format": "MITRE",
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            "value": "An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This issue may allow a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data being printed and potentially leaked to the kernel ring buffer (dmesg)."
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          "value": "This flaw can be mitigated by explicitly setting the kernel parameter to restrict unprivileged users from using dmesg:\n```\nsudo sysctl -w kernel.dmesg_restrict=1\n```\nTo make it persistent between system reboots:\n```\necho \u0027kernel.dmesg_restrict=1\u0027 | sudo tee -a /etc/sysctl.conf\n```"
        }
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          },
          {
            "lang": "es",
            "value": "Se encontr\u00f3 una vulnerabilidad de lectura fuera de los l\u00edmites en el subsistema NVMe-oF/TCP del kernel de Linux. Esta falla permite que un atacante remoto env\u00ede un paquete TCP manipulado, lo que desencadena un desbordamiento del b\u00fafer que da como resultado que los datos kmalloc se impriman (y potencialmente se filtren) en el b\u00fafer de anillo del kernel (dmesg)."
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        ],
        "id": "CVE-2023-6121",
        "lastModified": "2024-01-11T21:15:11.517",
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}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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