CVE-2014-9718

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-04-21 · updated 2026-06-17
Weakness: CWE-399

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.

Affected products

Debian Linux: 8.0
QEMU: 1.0, 1.0-rc1, 1.0-rc2, 1.0-rc3, 1.0-rc4, 1.0.1 (+36)

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=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
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=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

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