{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "DATE_ASSIGNED": "2017-08-22T17:29:33.325175",
        "ID": "CVE-2017-1000112",
        "REQUESTER": "willemdebruijn.kernel@gmail.com",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") on Oct 18 2005."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "[oss-security] 20170810 Linux kernel: CVE-2017-1000112: Exploitable memory corruption due to UFO to non-UFO path switch",
                "refsource": "MLIST",
                "url": "http://seclists.org/oss-sec/2017/q3/277"
            },
            {
                "name": "RHSA-2017:3200",
                "refsource": "REDHAT",
                "url": "https://access.redhat.com/errata/RHSA-2017:3200"
            },
            {
                "name": "100262",
                "refsource": "BID",
                "url": "http://www.securityfocus.com/bid/100262"
            },
            {
                "name": "RHSA-2017:2918",
                "refsource": "REDHAT",
                "url": "https://access.redhat.com/errata/RHSA-2017:2918"
            },
            {
                "name": "RHSA-2017:2931",
                "refsource": "REDHAT",
                "url": "https://access.redhat.com/errata/RHSA-2017:2931"
            },
            {
                "name": "DSA-3981",
                "refsource": "DEBIAN",
                "url": "http://www.debian.org/security/2017/dsa-3981"
            },
            {
                "name": "https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112",
                "refsource": "MISC",
                "url": "https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112"
            },
            {
                "name": "1039162",
                "refsource": "SECTRACK",
                "url": "http://www.securitytracker.com/id/1039162"
            },
            {
                "name": "45147",
                "refsource": "EXPLOIT-DB",
                "url": "https://www.exploit-db.com/exploits/45147/"
            },
            {
                "name": "RHSA-2017:2930",
                "refsource": "REDHAT",
                "url": "https://access.redhat.com/errata/RHSA-2017:2930"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:1932",
                "url": "https://access.redhat.com/errata/RHSA-2019:1932"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:1931",
                "url": "https://access.redhat.com/errata/RHSA-2019:1931"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:4159",
                "url": "https://access.redhat.com/errata/RHSA-2019:4159"
            }
        ]
    }
}