CVE-2016-7907: The imx_fec_do_tx function in hw/net/imx_fec.c in QEMU (aka Quick Emulator) does not properly limit the buf...

Security readout for executives and security teams

CVE-2016-7907 is a QEMU denial-of-service issue. A guest operating system administrator can craft i.MX FEC network descriptors that make QEMU loop indefinitely and crash the QEMU process. This affects availability of the affected virtual machine, not confidentiality or host escape based on the supplied sources. Exposure is most likely on systems running QEMU with the i.MX FEC network device emulated for guests, especially where guest administrators are untrusted. The bundle does not enumerate exact affected QEMU versions or downstream package ranges beyond Gentoo and openSUSE advisories. Treat this as a targeted availability risk for QEMU virtualization, not an internet-scale emergency. Patch during normal vulnerability maintenance, but accelerate for multi-tenant, lab, or appliance environments where guest administrators are not fully trusted. Mitigation focus: Apply QEMU updates from your OS vendor that include the imx_fec_do_tx descriptor-count limit.; Prioritize hosts running QEMU guests with i.MX/FEC network emulation exposed to untrusted administrators.; Restrict administrative access inside guest systems where practical; this vulnerability requires guest admin privileges..

Prepared

Jun 13, 2026, 13:39 UTC (UTC+00:00)

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