Vulnerabilities (CVE)

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Filtered by vendor Xen Subscribe
Total 446 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2017-14318 1 Xen 1 Xen 2017-11-29 4.9 MEDIUM 6.5 MEDIUM
An issue was discovered in Xen 4.5.x through 4.9.x. The function `__gnttab_cache_flush` handles GNTTABOP_cache_flush grant table operations. It checks to see if the calling domain is the owner of the page that is to be operated on. If it is not, the owner's grant table is checked to see if a grant mapping to the calling domain exists for the page in question. However, the function does not check to see if the owning domain actually has a grant table or not. Some special domains, such as `DOMID_XEN`, `DOMID_IO` and `DOMID_COW` are created without grant tables. Hence, if __gnttab_cache_flush operates on a page owned by these special domains, it will attempt to dereference a NULL pointer in the domain struct.
CVE-2015-4104 1 Xen 1 Xen 2017-11-14 7.8 HIGH N/A
Xen 3.3.x through 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors.
CVE-2017-12855 1 Xen 1 Xen 2017-11-14 2.1 LOW 6.5 MEDIUM
Xen maintains the _GTF_{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A guest is expected not to modify the grant details while it is in use, whereas the guest is free to modify/reuse the grant entry when it is not in use. Under some circumstances, Xen will clear the status bits too early, incorrectly informing the guest that the grant is no longer in use. A guest may prematurely believe that a granted frame is safely private again, and reuse it in a way which contains sensitive information, while the domain on the far end of the grant is still using the grant. Xen 4.9, 4.8, 4.7, 4.6, and 4.5 are affected.
CVE-2015-4105 1 Xen 1 Xen 2017-11-14 4.9 MEDIUM N/A
Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service (host disk consumption) via certain invalid operations.
CVE-2015-4103 1 Xen 1 Xen 2017-11-14 4.9 MEDIUM N/A
Xen 3.3.x through 4.5.x does not properly restrict write access to the host MSI message data field, which allows local x86 HVM guest administrators to cause a denial of service (host interrupt handling confusion) via vectors related to qemu and accessing spanning multiple fields.
CVE-2017-10918 1 Xen 1 Xen 2017-11-03 10.0 HIGH 10.0 CRITICAL
Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host OS access, aka XSA-222.
CVE-2017-10916 1 Xen 1 Xen 2017-11-03 5.0 MEDIUM 7.5 HIGH
The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.
CVE-2016-9932 1 Xen 1 Xen 2017-11-03 2.1 LOW 3.3 LOW
CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix.
CVE-2017-10922 1 Xen 1 Xen 2017-11-03 5.0 MEDIUM 7.5 HIGH
The grant-table feature in Xen through 4.8.x mishandles MMIO region grant references, which allows guest OS users to cause a denial of service (loss of grant trackability), aka XSA-224 bug 3.
CVE-2017-10914 1 Xen 1 Xen 2017-11-03 6.8 MEDIUM 8.1 HIGH
The grant-table feature in Xen through 4.8.x has a race condition leading to a double free, which allows guest OS users to cause a denial of service (memory consumption), or possibly obtain sensitive information or gain privileges, aka XSA-218 bug 2.
CVE-2017-10915 1 Xen 1 Xen 2017-11-03 6.8 MEDIUM 9.0 CRITICAL
The shadow-paging feature in Xen through 4.8.x mismanages page references and consequently introduces a race condition, which allows guest OS users to obtain Xen privileges, aka XSA-219.
CVE-2017-10917 1 Xen 1 Xen 2017-11-03 9.4 HIGH 9.1 CRITICAL
Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.
CVE-2017-15596 1 Xen 1 Xen 2017-11-03 4.9 MEDIUM 6.0 MEDIUM
An issue was discovered in Xen 4.4.x through 4.9.x allowing ARM guest OS users to cause a denial of service (prevent physical CPU usage) because of lock mishandling upon detection of an add-to-physmap error.
CVE-2015-8550 2 Novell, Xen 2 Suse Linux Enterprise Real Time Extension, Xen 2017-11-03 5.7 MEDIUM 8.2 HIGH
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
CVE-2016-10024 2 Citrix, Xen 2 Xenserver, Xen 2017-11-03 4.9 MEDIUM 6.0 MEDIUM
Xen through 4.8.x allows local x86 PV guest OS kernel administrators to cause a denial of service (host hang or crash) by modifying the instruction stream asynchronously while performing certain kernel operations.
CVE-2016-10013 1 Xen 1 Xen 2017-11-03 4.6 MEDIUM 7.8 HIGH
Xen through 4.8.x allows local 64-bit x86 HVM guest OS users to gain privileges by leveraging mishandling of SYSCALL singlestep during emulation.
CVE-2015-8552 4 Canonical, Debian, Novell and 1 more 5 Ubuntu Linux, Debian Linux, Suse Linux Enterprise Debuginfo and 2 more 2017-11-03 1.7 LOW 4.4 MEDIUM
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 passed-through MSI or MSI-X capable physical PCI device and XEN_PCI_OP_enable_msi operations, aka "Linux pciback missing sanity checks."
CVE-2007-0998 2 Redhat, Xen 3 Enterprise Linux, Fedora Core, Qemu 2017-10-10 4.3 MEDIUM N/A
The VNC server implementation in QEMU, as used by Xen and possibly other environments, allows local users of a guest operating system to read arbitrary files on the host operating system via unspecified vectors related to QEMU monitor mode, as demonstrated by mapping files to a CDROM device. NOTE: some of these details are obtained from third party information.
CVE-2009-1758 2 Linux, Xen 2 Linux Kernel, Xen 2017-09-28 5.0 MEDIUM N/A
The hypervisor_callback function in Xen, possibly before 3.4.0, as applied to the Linux kernel 2.6.30-rc4, 2.6.18, and probably other versions allows guest user applications to cause a denial of service (kernel oops) of the guest OS by triggering a segmentation fault in "certain address ranges."
CVE-2008-4993 1 Xen 1 Xen 2017-09-28 6.9 MEDIUM N/A
qemu-dm.debug in Xen 3.2.1 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/args temporary file.