An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.
{
"binaries": [
{
"binary_name": "libxen-4.6",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "libxen-dev",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "libxenstore3.0",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.4-amd64",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.4-arm64",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.4-armhf",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.5-amd64",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.5-arm64",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.5-armhf",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.6-amd64",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.6-arm64",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-hypervisor-4.6-armhf",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-system-amd64",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-system-arm64",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-system-armhf",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-utils-4.6",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xen-utils-common",
"binary_version": "4.6.5-0ubuntu1.4"
},
{
"binary_name": "xenstore-utils",
"binary_version": "4.6.5-0ubuntu1.4"
}
]
}
{
"binaries": [
{
"binary_name": "libxen-4.9",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "libxen-dev",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "libxenstore3.0",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.6-amd64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.6-arm64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.6-armhf",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.7-amd64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.7-arm64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.7-armhf",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.8-amd64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.8-arm64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.8-armhf",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.9-amd64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.9-arm64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-hypervisor-4.9-armhf",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-system-amd64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-system-arm64",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-system-armhf",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-utils-4.9",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xen-utils-common",
"binary_version": "4.9.2-0ubuntu1"
},
{
"binary_name": "xenstore-utils",
"binary_version": "4.9.2-0ubuntu1"
}
],
"availability": "No subscription required"
}