CVE-2014-9718 Information

Description

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.

Reference

http://git.qemu.org/?p=qemu.git;a=commit;h=3251bdcf1c67427d964517053c3d185b46e618e8 http://openwall.com/lists/oss-security/2015/04/20/7 http://www.debian.org/security/2015/dsa-3259 http://www.securityfocus.com/bid/73316