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CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0

QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue. QEMU (también conocido como Quick Emulator) construido con el soporte de invitados TPR optimization for 32-bit Windows es vulnerable a una falla de referencia puntero null. • http://www.debian.org/security/2016/dsa-3469 http://www.debian.org/security/2016/dsa-3470 http://www.debian.org/security/2016/dsa-3471 http://www.openwall.com/lists/oss-security/2016/01/16/1 http://www.openwall.com/lists/oss-security/2016/01/16/6 http://www.securityfocus.com/bid/81058 https://bugzilla.redhat.com/show_bug.cgi?id=1283934 https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html https://security.gentoo.org/glsa/201604-01 • CWE-476: NULL Pointer Dereference •

CVSS: 6.0EPSS: 0%CPEs: 1EXPL: 0

The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure to define the .write method. La compatibilidad MSI-X MMIO en hw/pci/msix.c en QEMU (también conocido como Quick Emulator) permite que usuarios privilegiados invitados locales del sistema operativo provoquen una denegación de servicio (desreferencia de puntero NULL y cierre inesperado del proceso QEMU) aprovechando el error a la hora de definir el método .write. • http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=43b11a91dd861a946b231b89b754285 http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175380.html http://www.debian.org/security/2016/dsa-3471 http://www.openwall.com/lists/oss-security/2015/12/14/2 http://www.securityfocus.com/bid/80761 https://bugzilla.redhat.com/show_bug.cgi?id=1291137 https://security.gentoo.org/glsa/201602-01 • CWE-476: NULL Pointer Dereference •

CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0

Stack-based buffer overflow in the megasas_ctrl_get_info function in QEMU, when built with SCSI MegaRAID SAS HBA emulation support, allows local guest users to cause a denial of service (QEMU instance crash) via a crafted SCSI controller CTRL_GET_INFO command. El desbordamiento de búfer basado en la pila en la función megasas_ctrl_get_info en QEMU, cuando se construye con el soporte de emulación SCSI MegaRAID SAS HBA, permite a los usuarios locales invitados provocar una denegación de servicio (caída de instancia QEMU) a través de un comando CTRL_GET_INFO. • http://www.debian.org/security/2016/dsa-3471 http://www.openwall.com/lists/oss-security/2015/12/22/1 http://www.securityfocus.com/bid/79719 https://bugzilla.redhat.com/show_bug.cgi?id=1284008 https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg03737.html https://security.gentoo.org/glsa/201604-01 • CWE-787: Out-of-bounds Write •

CVSS: 7.1EPSS: 0%CPEs: 3EXPL: 0

QEMU (aka Quick Emulator) built with the NE2000 device emulation support is vulnerable to an OOB r/w access issue. It could occur while performing 'ioport' r/w operations. A privileged (CAP_SYS_RAWIO) user/process could use this flaw to leak or corrupt QEMU memory bytes. QEMU (también conocido como Quick Emulator) construido con el soporte de emulación de dispositivo NE2000 es vulnerable a un problema de acceso OOB r/w. Podría ocurrir mientras se realizan operaciones 'ioport' r/w. • http://www.debian.org/security/2016/dsa-3469 http://www.debian.org/security/2016/dsa-3470 http://www.debian.org/security/2016/dsa-3471 http://www.openwall.com/lists/oss-security/2016/01/04/1 http://www.openwall.com/lists/oss-security/2016/01/04/2 http://www.securityfocus.com/bid/79820 http://www.securitytracker.com/id/1034574 https://bugzilla.redhat.com/show_bug.cgi?id=1264929 https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.html https:/ • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •

CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0

Memory leak in QEMU, when built with a VMWARE VMXNET3 paravirtual NIC emulator support, allows local guest users to cause a denial of service (host memory consumption) by trying to activate the vmxnet3 device repeatedly. La pérdida de memoria en QEMU, cuando se construye con un VMWARE VMXNET3 paravirtual NIC emulador de soporte, permite a los usuarios locales invitados a provocar una denegación de servicio (consumo de memoria del host) al intentar activar el dispositivo vmxnet3 repetidamente. • http://www.debian.org/security/2016/dsa-3471 http://www.openwall.com/lists/oss-security/2015/12/15/10 http://www.securityfocus.com/bid/79721 https://bugzilla.redhat.com/show_bug.cgi?id=1289816 https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg02299.html https://security.gentoo.org/glsa/201602-01 • CWE-772: Missing Release of Resource after Effective Lifetime •