citrix xenserver 7.6 vulnerabilities and exploits

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An issue exists in Xen up to and including 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-575...

Xen Xen Citrix Xenserver 7.0 Citrix Xenserver 7.1 Citrix Xenserver 7.5 Citrix Xenserver 7.6 Debian Debian Linux 9.0

2 Github repositories

An issue exists in Xen up to and including 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones.

Xen Xen Debian Debian Linux 9.0 Citrix Xenserver 7.0 Citrix Xenserver 7.1 Citrix Xenserver 7.5 Citrix Xenserver 7.6

An issue exists in Xen up to and including 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes.

Xen Xen Debian Debian Linux 9.0 Citrix Xenserver 7.0 Citrix Xenserver 7.1 Citrix Xenserver 7.5 Citrix Xenserver 7.6

Integer overflow in the VGA module in QEMU allows local guest OS users to cause a denial of service (out-of-bounds read and QEMU process crash) by editing VGA registers in VBE mode.

Oracle Vm Server 3.3 Oracle Vm Server 3.4 Qemu Qemu Qemu Qemu 2.6.0 Canonical Ubuntu Linux 12.04 Canonical Ubuntu Linux 14.04 Canonical Ubuntu Linux 15.10 Canonical Ubuntu Linux 16.04 Debian Debian Linux 8.0 Redhat Enterprise Linux Desktop 6.0 Redhat Enterprise Linux Desktop 7.0 Redhat Enterprise Linux Server 6.0

The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the "Dark Portal" issue.

Debian Debian Linux 8.0 Hp Helion Openstack 2.0.0 Hp Helion Openstack 2.1.0 Hp Helion Openstack 2.1.2 Hp Helion Openstack 2.1.4 Canonical Ubuntu Linux 12.04 Canonical Ubuntu Linux 14.04 Canonical Ubuntu Linux 15.10 Canonical Ubuntu Linux 16.04 Qemu Qemu Qemu Qemu 2.6.0 Oracle Vm Server 3.2

Heap-based buffer overflow in Cirrus CLGD 54xx VGA Emulator in Quick Emulator (Qemu) 2.8 and previous versions allows local guest OS users to execute arbitrary code or cause a denial of service (crash) via vectors related to a VNC client updating its display after a VGA operation...

Qemu Qemu Canonical Ubuntu Linux 14.04 Canonical Ubuntu Linux 16.04 Canonical Ubuntu Linux 16.10 Canonical Ubuntu Linux 17.04 Debian Debian Linux 8.0 Redhat Openstack 6.0 Redhat Openstack 7.0 Redhat Openstack 8 Redhat Openstack 9 Redhat Openstack 10 Redhat Openstack 5.0

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