rhsa-2016_2585
Vulnerability from csaf_redhat
Published
2016-11-03 08:09
Modified
2024-11-22 09:56
Summary
Red Hat Security Advisory: qemu-kvm security, bug fix, and enhancement update

Notes

Topic
An update for qemu-kvm is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm packages provide the user-space component for running virtual machines using KVM. Security Fix(es): * An integer overflow flaw and an out-of-bounds read flaw were found in the way QEMU's VGA emulator set certain VGA registers while in VBE mode. A privileged guest user could use this flaw to crash the QEMU process instance. (CVE-2016-3712) * An infinite loop flaw was found in the way QEMU's e1000 NIC emulation implementation processed data using transmit or receive descriptors under certain conditions. A privileged user inside a guest could use this flaw to crash the QEMU instance. (CVE-2016-1981) Red Hat would like to thank Zuozhi Fzz (Alibaba Inc.) for reporting CVE-2016-3712. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section.
Terms of Use
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.


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      "cwe": {
        "id": "CWE-835",
        "name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
      },
      "discovery_date": "2016-01-13T00:00:00+00:00",
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          "text": "1298570"
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        {
          "category": "description",
          "text": "An infinite loop flaw was found in the way QEMU\u0027s e1000 NIC emulation implementation processed data using transmit or receive descriptors under certain conditions. A privileged user inside a guest could use this flaw to crash the QEMU instance.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "Qemu: net: e1000 infinite loop in start_xmit and e1000_receive_iov routines",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affects the versions of kvm and xen packages as shipped with Red Hat Enterprise Linux 5.\n\nThis issue affects the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6 and 7.\n\nThis issue affects the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.\n\nThis issue affect the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.\n\nThis has been rated as having Low security impact and is not currently\nplanned to be addressed in future updates. For additional information, refer\nto the Red Hat Enterprise Linux Life Cycle:\nhttps://access.redhat.com/support/policy/updates/errata/.",
          "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"
        }
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2016-1981"
        },
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          "category": "external",
          "summary": "RHBZ#1298570",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1298570"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2016-1981",
          "url": "https://www.cve.org/CVERecord?id=CVE-2016-1981"
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2016-1981",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-1981"
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          "date": "2016-11-03T08:09:03+00:00",
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      "title": "Qemu: net: e1000 infinite loop in start_xmit and e1000_receive_iov routines"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Zuozhi Fzz"
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          "organization": "Alibaba Inc."
        }
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      "cve": "CVE-2016-3712",
      "cwe": {
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        "name": "Out-of-bounds Read"
      },
      "discovery_date": "2016-03-17T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1318712"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An integer overflow flaw and an out-of-bounds read flaw were found in the way QEMU\u0027s VGA emulator set certain VGA registers while in VBE mode. A privileged guest user could use this flaw to crash the QEMU process instance.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "qemu-kvm: Out-of-bounds read when creating weird vga screen surface",
          "title": "Vulnerability summary"
        },
        {
          "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"
        }
      ],
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "qemu-kvm: Out-of-bounds read when creating weird vga screen surface"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.