{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2016-3157",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
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                                "product_name": "n/a",
                                "version": {
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                                            "version_value": "n/a"
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    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access."
            }
        ]
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    "problemtype": {
        "problemtype_data": [
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                "description": [
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                        "lang": "eng",
                        "value": "n/a"
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        "reference_data": [
            {
                "name": "USN-2971-2",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2971-2"
            },
            {
                "name": "http://xenbits.xen.org/xsa/advisory-171.html",
                "refsource": "CONFIRM",
                "url": "http://xenbits.xen.org/xsa/advisory-171.html"
            },
            {
                "name": "USN-2970-1",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2970-1"
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            {
                "name": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html",
                "refsource": "CONFIRM",
                "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
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            {
                "name": "USN-2969-1",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2969-1"
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            {
                "name": "USN-2968-1",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2968-1"
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            {
                "name": "USN-2971-3",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2971-3"
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            {
                "name": "USN-2997-1",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2997-1"
            },
            {
                "name": "DSA-3607",
                "refsource": "DEBIAN",
                "url": "http://www.debian.org/security/2016/dsa-3607"
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            {
                "name": "USN-2971-1",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2971-1"
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                "name": "USN-2996-1",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2996-1"
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                "name": "USN-2968-2",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2968-2"
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            {
                "name": "1035308",
                "refsource": "SECTRACK",
                "url": "http://www.securitytracker.com/id/1035308"
            },
            {
                "name": "84594",
                "refsource": "BID",
                "url": "http://www.securityfocus.com/bid/84594"
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        ]
    }
}