Denial of Service Vulnerability in QEMU IDE Functionality

CVE-2014-9718 · MEDIUM Severity

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

The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality in QEMU 1.0 through 2.1.3 have multiple interpretations of a function's return value, which allows guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions.

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