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CVSS: 6.2EPSS: 0%CPEs: 44EXPL: 0

17 Dec 2015 — The memory_exchange function in common/memory.c in Xen 3.2.x through 4.6.x does not properly release locks, which might allow guest OS administrators to cause a denial of service (deadlock or host crash) via unspecified vectors, related to XENMEM_exchange error handling. La función memory_exchange en common/memory.c en Xen 3.2.x hasta la versión 4.6.x no devuelve adecuadamente páginas a un dominio, lo que podría permitir a administradores invitados del SO causar una denegación de servicio (interbloqueo o ca... • http://support.citrix.com/article/CTX203451 • CWE-17: DEPRECATED: Code •

CVSS: 7.8EPSS: 0%CPEs: 27EXPL: 0

17 Dec 2015 — The libxl toolstack library in Xen 4.1.x through 4.6.x does not properly release mappings of files used as kernels and initial ramdisks when managing multiple domains in the same process, which allows attackers to cause a denial of service (memory and disk consumption) by starting domains. La librería libxl toolstack en Xen 4.1.x hasta la versión 4.6.x no libera adecuadamente el mapeo de archivos utilizados como kernels y ramdisks iniciales cuando manejan múltiples dominios en el mismo proceso, lo que permi... • http://www.debian.org/security/2016/dsa-3519 • CWE-399: Resource Management Errors •

CVSS: 10.0EPSS: 0%CPEs: 30EXPL: 0

16 Nov 2015 — The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c. El subsistema KVM en el kernel Linux hasta la versión 4.2.6, y Xen 4.3.x hasta la versión 4.6.x permite a usuarios del SO invitados causar una denegación de servicio (panic en el host del SO o cuelgue) desencadenando muchas excepciones #DB (también conocidas como Debug), relacionadas con s... • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377d • CWE-399: Resource Management Errors CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

CVSS: 10.0EPSS: 0%CPEs: 33EXPL: 0

10 Nov 2015 — The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c. El subsistema KVM en el kernel Linux hasta la versión 4.2.6, y Xen 4.3.x hasta la versión 4.6.x permite a usuarios del SO invitados causar una denegación de servicio (panic en el host del SO o cuelgue) desencandenando muchas excepciones #AC (también conocidas como Align... • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54a20552e1eae07aa240fa370a0293e006b5faed • CWE-399: Resource Management Errors CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

CVSS: 9.8EPSS: 0%CPEs: 25EXPL: 0

30 Oct 2015 — Multiple memory leaks in Xen 4.0 through 4.6.x allow local guest administrators or domains with certain permission to cause a denial of service (memory consumption) via a large number of "teardowns" of domains with the vcpu pointer array allocated using the (1) XEN_DOMCTL_max_vcpus hypercall or the xenoprofile state vcpu pointer array allocated using the (2) XENOPROF_get_buffer or (3) XENOPROF_set_passive hypercall. Fugas de memoria múltiples en Xen 4.0 hasta la versión 4.6.x permite a administradores local... • http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html • CWE-399: Resource Management Errors •

CVSS: 7.8EPSS: 0%CPEs: 30EXPL: 0

30 Oct 2015 — The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping. La función mod_l2_entry en arch/x86/mm.c en Xen 3.4 hasta la versión 4.6.x no valida correctamente las entradas de la tabla de paginación de nivel 2, lo que permite a administradores invitados PV locales obtener privilegios a través de un mapeo de superpage manipulado. It was discovered that t... • http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html • CWE-20: Improper Input Validation CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 6.2EPSS: 0%CPEs: 37EXPL: 0

30 Oct 2015 — Xen 3.2.x through 4.6.x does not limit the number of printk console messages when logging certain pmu and profiling hypercalls, which allows local guests to cause a denial of service via a sequence of crafted (1) HYPERCALL_xenoprof_op hypercalls, which are not properly handled in the do_xenoprof_op function in common/xenoprof.c, or (2) HYPERVISOR_xenpmu_op hypercalls, which are not properly handled in the do_xenpmu_op function in arch/x86/cpu/vpmu.c. Xen 3.2.x hasta la versión 4.6.x no limita el número de m... • http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html • CWE-19: Data Processing Errors •

CVSS: 4.7EPSS: 0%CPEs: 1EXPL: 0

30 Oct 2015 — Race condition in the relinquish_memory function in arch/arm/domain.c in Xen 4.6.x and earlier allows local domains with partial management control to cause a denial of service (host crash) via vectors involving the destruction of a domain and using XENMEM_decrease_reservation to reduce the memory of the domain. Condición de carrera en la función relinquish_memory en arch/arm/domain.c en Xen 4.6.x y versiones anteriores permite a dominios locales con control parcial de la gestión provocar una denegación de ... • http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVSS: 5.5EPSS: 0%CPEs: 30EXPL: 0

30 Oct 2015 — The (1) libxl_set_memory_target function in tools/libxl/libxl.c and (2) libxl__build_post function in tools/libxl/libxl_dom.c in Xen 3.4.x through 4.6.x do not properly calculate the balloon size when using the populate-on-demand (PoD) system, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors related to "heavy memory pressure." La función (1) libxl_set_memory_target en tools/libxl/libxl.c y (2) libxl__build_post en tools/libxl/libxl_dom.c en Xen 3.4.x hast... • http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html • CWE-399: Resource Management Errors •

CVSS: 6.5EPSS: 0%CPEs: 23EXPL: 0

01 Oct 2015 — libxl in Xen 4.1.x through 4.6.x does not properly handle the readonly flag on disks when using the qemu-xen device model, which allows local guest users to write to a read-only disk image. libxl en Xen 4.1.x hasta la versión 4.6.x no maneja correctamente el indicador de solo lectura en los discos cuando se utiliza el dispositivo modelo qemu-xen, lo que permite a usuarios invitados locales escribir a una imagen de disco de sólo lectura. Multiple security issues have been found in the Xen virtualisation solu... • http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167077.html • CWE-17: DEPRECATED: Code •