Denial of Service and Arbitrary Code Execution Vulnerability in QEMU Firmware Configuration Device Emulation

CVE-2016-1714 · MEDIUM Severity

AV:L/AC:M/AU:N/C:C/I:C/A:C

The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.

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