Xen Project Pass-through PCI Device Guest-to-Host Privilege Escalation (XSA-285)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by guest-to-host privilege escalation vulnerability. Only x86 systems are affected. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check...

race with pass-through device hotplug

ISSUE DESCRIPTION When adding a passed-through PCI device to a domain after it was already started, IOMMU page tables may need constructing on the fly. For PV guests the decision whether a page ought to have a mapping is based on whether the page is writable, to prevent IOMMU access to things lik...

insufficient TLB flushing / improper large page mappings with AMD IOMMUs

ISSUE DESCRIPTION In order to be certain that no undue access to memory is possible anymore after IOMMU mappings of this memory have been removed, Translation Lookaside Buffers TLBs need to be flushed after most changes to such mappings. Xen bypassed certain IOMMU flushes on AMD x86 hardware...

CVE-2017-8831

The saa7164busget function in drivers/media/pci/saa7164/saa7164-bus.c in the Linux kernel allows users able to plant rogue PCI device on the system to cause a denial of service out-of-bounds array access or possibly have unspecified other impact by changing a certain sequence-number value, aka a...

Information disclosure

Xen PV guest before Xen 4.3 checked access permissions to MMIO ranges only after accessing them, allowing host PCI device space memory reads, leading to information disclosure. This is an error in the getuser function. NOTE: the upstream Xen Project considers versions before 4.5.x to be EOL...

CVE-2017-7995

Xen PV guest before Xen 4.3 checked access permissions to MMIO ranges only after accessing them, allowing host PCI device space memory reads, leading to information disclosure. This is an error in the getuser function. NOTE: the upstream Xen Project considers versions before 4.5.x to be EOL...

openSUSE Security Update : the Linux Kernel (openSUSE-2016-1426)

The openSUSE Leap 42.2 kernel was updated to 4.4.36 to receive various security and bugfixes. The following security bugs were fixed : - CVE-2015-1350: The VFS subsystem in the Linux kernel 3.x provides an incomplete set of requirements for setattr operations that underspecifies removing extended...

CVE-2016-9084

drivers/vfio/pci/vfiopciintrs.c in the Linux kernel through 4.8.11 misuses the kzalloc function, which allows local users to cause a denial of service integer overflow or have unspecified other impact by leveraging access to a vfio PCI device file...

CVE-2016-9084

drivers/vfio/pci/vfiopciintrs.c in the Linux kernel through 4.8.11 misuses the kzalloc function, which allows local users to cause a denial of service integer overflow or have unspecified other impact by leveraging access to a vfio PCI device file...

PT-2016-7647 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions through 4.8.11 Description: The issue allows local users to bypass integer overflow checks, potentially causing a denial of service memory corruption or having unspecified other impact. This is achieved by leveraging...

UBUNTU-CVE-2016-9084

drivers/vfio/pci/vfiopciintrs.c in the Linux kernel through 4.8.11 misuses the kzalloc function, which allows local users to cause a denial of service integer overflow or have unspecified other impact by leveraging access to a vfio PCI device file...

DEBIAN-CVE-2015-8554

Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional aka qemu-dm device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries,...

Buffer overflow

Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional aka qemu-dm device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries,...

CVE-2015-8554

Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional aka qemu-dm device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries,...

CVE-2015-8554

CVE-2015-8554 describes a buffer overflow in Xen’s MSI-X handling: in hw/pt-msi.c for Xen 4.6.x and earlier when using the qemu-xen-traditional (qemu-dm) device model. The issue enables local x86 HVM guest administrators, with access to a passed-through MSI-X capable PCI device and MSI-X table en...

CVE-2015-8554

Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional aka qemu-dm device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries,...

CVE-2015-8551

The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service NULL pointer dereference and host OS crash by leveraging a system with access to a...

Design/Logic Flaw

The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to generate a continuous stream of WARN messages and cause a denial of service disk consumption by leveraging a system with access to a...

CVE-2015-8551

The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service NULL pointer dereference and host OS crash by leveraging a system with access to a...

CVE-2015-8552

The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to generate a continuous stream of WARN messages and cause a denial of service disk consumption by leveraging a system with access to a...