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.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[Qemu-devel] 20160106 [PATCH v2 for v2.3.0] fw_cfg: add check to validate current entry value
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disclosed, or updated in CVE.
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