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.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qemu | Qemu | * | 2.5.1.1 (including) |
| Qemu | Ubuntu | trusty | * |
| Qemu | Ubuntu | upstream | * |
| Qemu | Ubuntu | vivid | * |
| Qemu | Ubuntu | wily | * |
| Qemu | Ubuntu | xenial | * |
| Qemu-kvm | Ubuntu | precise | * |
| Qemu-kvm | Ubuntu | upstream | * |