/usr/share/qemu/ is in qemu-system-x86 2.0.0~rc1+dfsg-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/qemu/acpi-dsdt.aml
/usr/share/qemu/bios-256k.bin
/usr/share/qemu/bios.bin
/usr/share/qemu/eepro100.rom
/usr/share/qemu/efi-e1000.rom
/usr/share/qemu/efi-eepro100.rom
/usr/share/qemu/efi-ne2k_pci.rom
/usr/share/qemu/efi-pcnet.rom
/usr/share/qemu/efi-rtl8139.rom
/usr/share/qemu/efi-virtio.rom
/usr/share/qemu/extboot.bin
/usr/share/qemu/kvmvapic.bin
/usr/share/qemu/linuxboot.bin
/usr/share/qemu/multiboot.bin
/usr/share/qemu/pxe-eepro100.rom
/usr/share/qemu/pxe-ne2k_pci.rom
/usr/share/qemu/pxe-pcnet.rom
/usr/share/qemu/q35-acpi-dsdt.aml
/usr/share/qemu/vgabios-cirrus.bin
/usr/share/qemu/vgabios-qxl.bin
/usr/share/qemu/vgabios-stdvga.bin
/usr/share/qemu/vgabios-vmware.bin
/usr/share/qemu/vgabios.bin