CVE-2017-14167: Integer overflow in the load_multiboot function in hw/i386/multiboot.c in QEMU (aka Quick Emulator) allows...

Security readout for executives and security teams

This QEMU flaw could let someone already controlling a guest VM attack the virtualization host by supplying malformed multiboot header values. The sources describe host arbitrary code execution from an out-of-bounds write, making exposure important where untrusted or tenant-controlled guest images run. Exposure is most likely on virtualization hosts running affected QEMU builds that allow guest users, tenants, or automation to supply bootable guest kernel images using multiboot. The bundle does not provide exact affected versions or CPEs. Treat this as high priority for virtualization environments with untrusted guests. The business risk is guest-to-host compromise, but urgency depends on whether affected QEMU versions and multiboot guest-loading paths are present. Mitigation focus: Apply QEMU security updates from the relevant vendor advisory.; Prioritize Red Hat, Debian, and Ubuntu virtualization hosts using QEMU.; Restrict untrusted users from supplying custom guest kernels or boot images..

Prepared

Jun 12, 2026, 21:19 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.