CVE-2016-9103: The v9fs_xattrcreate function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administra...

Security readout for executives and security teams

CVE-2016-9103 is an information leak in QEMU's 9pfs file-sharing code. A guest OS administrator could read uninitialized extended-attribute data and learn sensitive host heap memory contents. The bundle does not identify active exploitation or a full affected-version range. Exposure is most likely on virtualization hosts running QEMU with 9pfs/shared-folder functionality available to guest systems. The bundle does not provide exact affected versions or CPEs, so inventory should be advisory-driven. Treat this as a targeted virtualization-host information disclosure risk, not a broad internet-facing emergency. Prioritize shared or multi-tenant QEMU environments where guest administrators should not learn host memory contents. Mitigation focus: Apply QEMU updates from your OS vendor or upstream.; Prioritize hosts that expose 9pfs file sharing to guests.; Disable 9pfs/shared-folder use where it is not required..

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.