CVSS: 5.2EPSS: 0%CPEs: 1EXPL: 1CVE-2011-3131 – kernel: xen: IOMMU fault livelock
https://notcve.org/view.php?id=CVE-2011-3131
Xen 4.1.1 and earlier allows local guest OS kernels with control of a PCI[E] device to cause a denial of service (CPU consumption and host hang) via many crafted DMA requests that are denied by the IOMMU, which triggers a livelock. Xen v4.1.1 y anteriores permite causar una denegación de servicio (consumo de CPU y bloqueo de Xen) a los kernels de sistemas operativos huesped que controlan dispositivos PCI[E] a través de muchas peticiones DMA modificadas que son denegadas por la IOMMU, lo que desencadena un bloqueo activo. • http://old-list-archives.xen.org/archives/html/xen-devel/2011-06/msg01106.html http://old-list-archives.xen.org/archives/html/xen-devel/2011-08/msg00450.html http://secunia.com/advisories/45622 http://secunia.com/advisories/51468 http://www.debian.org/security/2012/dsa-2582 http://www.securityfocus.com/bid/49146 http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg/rev/84e3706df07a https://access.redhat.com/security/cve/CVE-2011-3131 https://bugzilla.redhat.com/show& • CWE-399: Resource Management Errors •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2011-2519 – kernel: xen: x86_emulate: fix SAHF emulation
https://notcve.org/view.php?id=CVE-2011-2519
Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction. Xen en el kernel de Linux, al ejecutar como invitado en una máquina sin paginación asistida por hardware (HAP), permite a usuarios invitados causar denegación de servicio (referencia a puntero inválido y caída del hipervisor) a través de la instrucción SAHF. • http://rhn.redhat.com/errata/RHSA-2011-1212.html http://www.openwall.com/lists/oss-security/2011/08/30/1 http://xenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644 https://bugzilla.redhat.com/show_bug.cgi?id=718882 https://access.redhat.com/security/cve/CVE-2011-2519 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 10EXPL: 0CVE-2011-2901 – kernel: xen: off-by-one shift in x86_64 __addr_ok()
https://notcve.org/view.php?id=CVE-2011-2901
Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits. Error de superación de límite (off-by-one) en la macro __addr_ok en Xen 3.3 y anteriores permite a administradores invitados locales 64 bit PV causar una denegación del servicio (caída del host) a través de hypercalls no especificadas que ignoran bits de direcciones virtuales. • http://rhn.redhat.com/errata/RHSA-2011-1212.html http://secunia.com/advisories/55082 http://security.gentoo.org/glsa/glsa-201309-24.xml http://www.openwall.com/lists/oss-security/2011/09/02/2 https://bugzilla.redhat.com/show_bug.cgi?id=728042 https://access.redhat.com/security/cve/CVE-2011-2901 • CWE-193: Off-by-one Error CWE-399: Resource Management Errors •
CVSS: 6.1EPSS: 0%CPEs: 1EXPL: 0CVE-2011-1780 – kernel: xen: svm: insufficiencies in handling emulated instructions during vm exits
https://notcve.org/view.php?id=CVE-2011-1780
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread. La instrucción de emulación en Xen 3.0.3 permite a usuarios invitados SMP locales causar denegación de servicio (caída del anfitrión) reemplazando la instrucción que causa que la máquina virtual salga en un hilo con una instrucción deferente en un hilo distinto. • http://rhn.redhat.com/errata/RHSA-2011-1065.html http://rhn.redhat.com/errata/RHSA-2011-1163.html http://www.openwall.com/lists/oss-security/2011/07/07/3 https://bugzilla.redhat.com/show_bug.cgi?id=702657 https://access.redhat.com/security/cve/CVE-2011-1780 • CWE-20: Improper Input Validation •
CVSS: 5.5EPSS: 0%CPEs: 19EXPL: 0CVE-2011-1166 – kernel: xen: x86_64: fix error checking in arch_set_info_guest()
https://notcve.org/view.php?id=CVE-2011-1166
Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host crash) by specifying user mode execution without user-mode pagetables. Xen, probablemente anterior a v4.0.2 permite a invitados locales de 64-bit PV provocar una denegación de servicio (caída del host) especificando la ejecución en modo usuario sin las tablas de página. • http://downloads.avaya.com/css/P8/documents/100145416 http://rhn.redhat.com/errata/RHSA-2011-0833.html http://wiki.xen.org/wiki/Security_Announcements#XSA-1_Host_crash_due_to_failure_to_correctly_validate_PV_kernel_execution_state. https://access.redhat.com/security/cve/CVE-2011-1166 https://bugzilla.redhat.com/show_bug.cgi?id=688579 • CWE-20: Improper Input Validation •