{
  "document": {
    "aggregate_severity": {
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      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An updated virtio-win package that fixes one security issue and two bugs is\nnow available for Red Hat Enterprise Linux 6 Supplementary.\n\nRed Hat Product Security has rated this update as having Important security\nimpact. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available from the CVE link in the\nReferences section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The virtio-win package provides paravirtualized network drivers for most\nMicrosoft Windows operating systems. Paravirtualized drivers are\nvirtualization-aware drivers used by fully virtualized guests running on\nRed Hat Enterprise Linux. Fully virtualized guests using the\nparavirtualized drivers gain significantly better I/O performance than\nfully virtualized guests running without the drivers.\n\nIt was found that the Windows Virtio NIC driver did not sufficiently\nsanitize the length of the incoming IP packets, as demonstrated by a packet\nwith IP options present but the overall packet length not being adjusted to\nreflect the length of those options. A remote attacker able to send a\nspecially crafted IP packet to the guest could use this flaw to crash that\nguest. (CVE-2015-3215)\n\nRed Hat would like to thank Google Project Zero for reporting this issue.\n\nThis update also fixes the following bugs:\n\n* When creating a Windows guest using virtio drivers and direct Logical\nUnit Number (LUN) access with more than 4 SCSI disks under one\nvirtio-scsi-pci controller, the guest terminated unexpectedly with a stop\nerror, also known as the blue screen of death. This update increases the\nmaximum amount of LUNs per a single virtio-scsi-pci controller has been\nincreased to 254, which prevents the described crash from occurring.\n(BZ#1210196)\n\n* The license.txt file in the virtio-win build has been updated to include\nthe correct year number in the copyright information section. (BZ#1210195)\n\nAll virtio-win users are advised to upgrade to this updated package, which\ncontains backported patches to correct these issues.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2015:1043",
        "url": "https://access.redhat.com/errata/RHSA-2015:1043"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "1227634",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1227634"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2015/rhsa-2015_1043.json"
      }
    ],
    "title": "Red Hat Security Advisory: virtio-win security and bug fix update",
    "tracking": {
      "current_release_date": "2025-11-21T17:52:35+00:00",
      "generator": {
        "date": "2025-11-21T17:52:35+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.6.12"
        }
      },
      "id": "RHSA-2015:1043",
      "initial_release_date": "2015-06-03T09:50:15+00:00",
      "revision_history": [
        {
          "date": "2015-06-03T09:50:15+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2015-06-03T09:50:15+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2025-11-21T17:52:35+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux Desktop Supplementary (v. 6)",
                "product": {
                  "name": "Red Hat Enterprise Linux Desktop Supplementary (v. 6)",
                  "product_id": "6Client-Supplementary-6.6.z",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:rhel_extras:6"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux Server Supplementary (v. 6)",
                "product": {
                  "name": "Red Hat Enterprise Linux Server Supplementary (v. 6)",
                  "product_id": "6Server-Supplementary-6.6.z",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:rhel_extras:6"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux Workstation Supplementary (v. 6)",
                "product": {
                  "name": "Red Hat Enterprise Linux Workstation Supplementary (v. 6)",
                  "product_id": "6Workstation-Supplementary-6.6.z",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:rhel_extras:6"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux Supplementary"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "virtio-win-0:1.7.4-1.el6_6.noarch",
                "product": {
                  "name": "virtio-win-0:1.7.4-1.el6_6.noarch",
                  "product_id": "virtio-win-0:1.7.4-1.el6_6.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/virtio-win@1.7.4-1.el6_6?arch=noarch"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "virtio-win-0:1.7.4-1.el6_6.noarch as a component of Red Hat Enterprise Linux Desktop Supplementary (v. 6)",
          "product_id": "6Client-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch"
        },
        "product_reference": "virtio-win-0:1.7.4-1.el6_6.noarch",
        "relates_to_product_reference": "6Client-Supplementary-6.6.z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "virtio-win-0:1.7.4-1.el6_6.noarch as a component of Red Hat Enterprise Linux Server Supplementary (v. 6)",
          "product_id": "6Server-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch"
        },
        "product_reference": "virtio-win-0:1.7.4-1.el6_6.noarch",
        "relates_to_product_reference": "6Server-Supplementary-6.6.z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "virtio-win-0:1.7.4-1.el6_6.noarch as a component of Red Hat Enterprise Linux Workstation Supplementary (v. 6)",
          "product_id": "6Workstation-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch"
        },
        "product_reference": "virtio-win-0:1.7.4-1.el6_6.noarch",
        "relates_to_product_reference": "6Workstation-Supplementary-6.6.z"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Google Project Zero"
          ]
        }
      ],
      "cve": "CVE-2015-3215",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "discovery_date": "2014-12-02T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1227634"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "It was found that the Windows Virtio NIC driver did not sufficiently sanitize the length of the incoming IP packets, as demonstrated by a packet with IP options present but the overall packet length not being adjusted to reflect the length of those options. A remote attacker able to send a specially crafted IP packet to the guest could use this flaw to crash that guest.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "virtio-win: netkvm: malformed packet can cause BSOD",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue does affect the virtio-win packages as shipped with Red Hat Enteprise Linux 6 and 7. Future updates for the respective releases will address this issue.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "6Client-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch",
          "6Server-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch",
          "6Workstation-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2015-3215"
        },
        {
          "category": "external",
          "summary": "RHBZ#1227634",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1227634"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2015-3215",
          "url": "https://www.cve.org/CVERecord?id=CVE-2015-3215"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2015-3215",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-3215"
        }
      ],
      "release_date": "2014-12-15T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2015-06-03T09:50:15+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "6Client-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch",
            "6Server-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch",
            "6Workstation-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2015:1043"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 6.1,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "products": [
            "6Client-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch",
            "6Server-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch",
            "6Workstation-Supplementary-6.6.z:virtio-win-0:1.7.4-1.el6_6.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "virtio-win: netkvm: malformed packet can cause BSOD"
    }
  ]
}