A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "qemu", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-block-extra", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-block-extra-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-guest-agent", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-guest-agent-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-kvm", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-arm", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-arm-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-common", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-common-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-data", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-gui", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-gui-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-mips", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-mips-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-misc", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-misc-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-ppc", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-ppc-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-s390x", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-s390x-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-sparc", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-sparc-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-x86", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-x86-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-x86-microvm", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-x86-microvm-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-x86-xen", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-system-x86-xen-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-user", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-user-binfmt", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-user-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-user-static", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-user-static-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-utils", "binary_version": "1:4.2-3ubuntu6.28" }, { "binary_name": "qemu-utils-dbgsym", "binary_version": "1:4.2-3ubuntu6.28" } ], "ubuntu_priority": "medium" }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "qemu", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-block-extra", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-block-extra-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-guest-agent", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-guest-agent-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-arm", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-arm-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-common", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-common-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-data", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-gui", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-gui-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-mips", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-mips-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-misc", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-misc-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-ppc", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-ppc-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-s390x", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-s390x-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-sparc", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-sparc-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-x86", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-x86-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-x86-microvm", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-x86-xen", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-system-x86-xen-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-user", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-user-binfmt", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-user-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-user-static", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-user-static-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-utils", "binary_version": "1:6.2+dfsg-2ubuntu6.16" }, { "binary_name": "qemu-utils-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu6.16" } ], "ubuntu_priority": "medium" }