The vulnerability of Xen hypervisors relates to the insecure management of privileges, which allows attackers to gain access to confidential data, compromise its integrity, and cause service failures.

The vulnerability of Xen hypervisors is related to an emulation error in PV x86, where there is no check for the limit on the descriptor table. Exploiting this vulnerability can allow a remote attacker to access confidential data, compromise its integrity, and cause service failures...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as a flaw in the Xen hypervisor IOMMU error handling implementation could allow a privileged guest user, within a guest operating system that has direct control of a PCI device, to cause performance degradation on the host an...

Denial Of Service (DoS)

kernel is vulnerable to denial of service. A flaw was found in the way the Linux kernel's KVM hypervisor implementation emulated the syscall instruction for 32-bit guests. An unprivileged guest user could trigger this flaw to crash the guest...

Denial Of Service (DoS)

kernel is vulnerable to denial of service. A flaw was found in the way the Xen hypervisor implementation handled instruction emulation during virtual machine exits. A malicious user-space process running in an SMP guest could trick the emulator into reading a different instruction than the one th...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as an off-by-one flaw was found in the addrok macro in the Linux kernel's Xen hypervisor implementation when running on 64-bit systems. A privileged guest user could trigger this flaw to cause the hypervisor to crash...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as a flaw was found in the way the Linux kernel's Xen hypervisor implementation emulated the SAHF instruction. When using a fully-virtualized guest on a host that does not use hardware assisted paging HAP, such as those runni...

Privilege Escalation

kernel is vulnerable to privilege escalation. The vulnerability exists as a flaw was found in the way the Xen hypervisor implementation checked for the upper boundary when getting a new event channel port. A privileged guest user could use this flaw to cause a denial of service or escalate their...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as a missing error checking in the way page tables were handled in the Xen hypervisor implementation could allow a privileged guest user to cause the host, and the guests, to lock up...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as a flaw was found in fixuppagefault in the Xen hypervisor implementation. If a 64-bit para-virtualized guest accessed a certain area of memory, it could cause a denial of service on the host system running the Xen hyperviso...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists through a missing sanity check was found in vbdcreate in the Xen hypervisor implementation. As CD-ROM drives are not supported by the blkback back-end driver, attempting to use a virtual CD-ROM drive with blkback could trigge...

Denial Of Service (DoS)

kernel is vulnerable to denial of service. It was found that a malicious guest running on the Xen hypervisor could place invalid data in the memory that the guest shared with the blkback and blktap back-end drivers, resulting in a denial of service on the host system...

Denial Of Service (DoS)

kernel is vulnerable to denial of service. A flaw was found in the Xenbus code for the unified block-device I/O interface back end. A privileged guest user could use this flaw to cause a denial of service on the host system running the Xen hypervisor...

Denial Of Service (DoS)

kernel is vulnerable to denial of service. A flaw was found in the Xen hypervisor implementation when running a system that has an Intel CPU without Extended Page Tables EPT support. While attempting to dump information about a crashing fully-virtualized guest, the flaw could cause the hypervisor...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as a flaw was found in the Xen hypervisor implementation when using the Intel Itanium architecture, allowing guests to enter an unsupported state. An unprivileged guest user could trigger this flaw by setting the BE Big Endia...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as a flaw was found in the Memory-mapped I/O MMIO instruction decoder in the Xen hypervisor implementation. An unprivileged guest user could use this flaw to trick the hypervisor into emulating a certain instruction, which...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as a possible hypervisor panic was found in the Linux kernel. A privileged user of a fully virtualized guest could initiate a stress-test File Transfer Protocol FTP transfer between the guest and the hypervisor, possibly...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as the absence of sanity-checks was found in the hypervisor block backend driver, when running 32-bit paravirtualized guests on a 64-bit host. The number of blocks to be processed per one request from guest to host, or...

Denial Of Service (DoS)

xen is vulnerable to denial of service. The hypervisor's para-virtualized framebuffer PVFB backend failed to validate the frontend's framebuffer description. This could allow a malicious user to cause a denial of service, or to use a specially crafted frontend to compromise the privileged domain...

Information Disclosure

The kernel is vulnerable to information disclosure. a flaw in the hypervisor for hosts running on Itanium architectures allowed an Intel VTi domain to read arbitrary physical memory from other Intel VTi domains, which could make information available to unauthorized users...

Xen Project Denial of Service (XSA-295)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by multiple denial of service DoS vulnerabilities : - A denial of service DoS vulnerability exists in the LoadExcl and StoreExcl operations due to a possible infinite loop. An unauthenticate...