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CVSS: 6.0EPSS: 0%CPEs: 12EXPL: 0

The ehci_advance_state function in hw/usb/hcd-ehci.c in QEMU allows local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular split isochronous transfer descriptor (siTD) list, a related issue to CVE-2015-8558. La función ehci_advance_state en hw/usb/hcd-ehci.c en QEMU permite a administradores de SO locales invitados provocar una denegación de servicio (bucle infinito y consumo de CPU) a través de una lista siTD (de descriptor de transferencia isócrona dividida) circular, problema relacionado con CVE-2015-8558. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1ae3f2f178087711f9591350abad133525ba93f2 http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183275.html http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183350.html http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184209.html http://www.openwall.com/lists/oss-security/2016/04/18/3 http://www.openwall.com/lists/oss-security/2016/04/18/6 http://www.securityfocus.com/bid/86283 http://www.ubun • CWE-400: Uncontrolled Resource Consumption •

CVSS: 5.0EPSS: 0%CPEs: 6EXPL: 0

The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers. La función ohci_bus_start en el suporte de emulación USB OHCI (hw/usb/hcd-ohci.c) en QEMU permite a administradores locales del SO invitado provocar una denegación de servicio (referencia a puntero NULL y caída del proceso QEMU) a través de vectores relacionados con temporizadores eof múltiples. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fa1298c2d623522eda7b4f1f721fcb935abb7360 http://www.openwall.com/lists/oss-security/2016/02/16/2 http://www.securityfocus.com/bid/83263 http://www.ubuntu.com/usn/USN-2974-1 https://bugzilla.redhat.com/show_bug.cgi?id=1304794 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg03374.html • CWE-476: NULL Pointer Dereference •

CVSS: 6.0EPSS: 0%CPEs: 5EXPL: 0

The ne2000_receive function in the NE2000 NIC emulation support (hw/net/ne2000.c) in QEMU before 2.5.1 allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via crafted values for the PSTART and PSTOP registers, involving ring buffer control. La función ne2000_receive en el soporte de emulación NE2000 NIC (hw/net/ne2000.c) en QEMU en versiones anteriores a 2.5.1 permite a administradores locales del SO invitado provocar una denegación de servicio (bucle infinito y caída del proceso QEMU) a través de valores manipulados para los registros PSTART y PSTOP, involucrando control de anillo de buffer. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=415ab35a441eca767d033a2702223e785b9d5190 http://lists.nongnu.org/archive/html/qemu-stable/2016-03/msg00064.html http://www.openwall.com/lists/oss-security/2016/03/02/8 http://www.securityfocus.com/bid/84028 http://www.ubuntu.com/usn/USN-2974-1 https://bugzilla.redhat.com/show_bug.cgi?id=1303106 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg06126.h • CWE-20: Improper Input Validation •

CVSS: 6.5EPSS: 0%CPEs: 26EXPL: 0

The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR). La función patch_instruction en hw/i386/kvmvapic.c en QEMU no inicializa la variable imm32, lo que permite a administradores locales del SO invitado obtener información sensible de la memoria de pila del anfitrión accediendo al Task Priority Register (TPR). An information-exposure flaw was found in Quick Emulator (QEMU) in Task Priority Register (TPR) optimizations for 32-bit Windows guests. The flaw could occur while accessing TPR. A privileged user inside a guest could use this issue to read portions of the host memory. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0 http://www.securityfocus.com/bid/86067 http://www.ubuntu.com/usn/USN-2974-1 https://access.redhat.com/errata/RHSA-2017:1856 https://access.redhat.com/errata/RHSA-2017:2392 https://access.redhat.com/errata/RHSA-2017:2408 https://bugzilla.redhat.com/show_bug.cgi?id=1313686 https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html https://lists.gnu.org/archive/html/qemu-devel/2016& • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 5.5EPSS: 0%CPEs: 32EXPL: 0

Integer overflow in the VGA module in QEMU allows local guest OS users to cause a denial of service (out-of-bounds read and QEMU process crash) by editing VGA registers in VBE mode. Desbordamiento de entero en el módulo VGA en QEMU permite a usuarios de SO invitado locales provocar una denegación de servicio (lectura fuera de límites y caída de proceso QEMU) editando registros VGA en modo VBE. An integer overflow flaw and an out-of-bounds read flaw were found in the way QEMU's VGA emulator set certain VGA registers while in VBE mode. A privileged guest user could use this flaw to crash the QEMU process instance. • http://rhn.redhat.com/errata/RHSA-2016-2585.html http://rhn.redhat.com/errata/RHSA-2017-0621.html http://support.citrix.com/article/CTX212736 http://www.debian.org/security/2016/dsa-3573 http://www.openwall.com/lists/oss-security/2016/05/09/4 http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/90314 http://www.securitytracker.com/id/1035794 http://www.ubuntu.com/usn/USN-2974-1 http://xenbits.xen.org/ • CWE-125: Out-of-bounds Read CWE-190: Integer Overflow or Wraparound •