CVE-2014-9718 Denial of service in n/a

Medium 4.9 Published Updated

Guest OS users can cause host system crashes or memory exhaustion via crafted PRDT entries in QEMU IDE interfaces.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2014-9718?

CVE-2014-9718 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 21 Apr 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-399

Which versions are affected by CVE-2014-9718?

It affects 2 products.

Products include Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2014-9718?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2014-9718 being exploited?

There is no known exploitation of CVE-2014-9718 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2014-9718, GHSA-wc8f-g43g-pgxv, UBUNTU-CVE-2014-9718.

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