CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in QEMU (aka Quick Emulator) allows local guest OS administrat...

Security readout for executives and security teams

This is a QEMU denial-of-service flaw. A privileged user inside a guest operating system could trigger a divide-by-zero condition that crashes the QEMU process. The main business risk is availability loss for affected virtual machines, not data theft or host code execution based on the supplied sources. Exposure is most relevant where QEMU is used and guest administrators can interact with the rc4030 DMA/timer emulation path. The supplied sources do not provide complete affected version ranges or distribution package mappings beyond listed vendor security updates. Treat this as a targeted availability risk for virtualization environments. Prioritize patching internet-facing or multi-tenant platforms first, but urgency is below remote code execution issues because the supplied evidence requires guest administrator access. Mitigation focus: Apply QEMU security updates from the relevant operating system or vendor channel.; Check Debian LTS and openSUSE advisories if those distributions are in use.; Confirm vendor guidance for exact affected package versions before closing exposure..

Prepared

Jun 13, 2026, 13:16 UTC (UTC+00:00)

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