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Vigil@nce - QEMU: memory leak via the audio driver ac97

March 2017 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

An attacker in tghe guest system can create a memory leak in the ac97 audio device driver of QEMU, in order to trigger a denial of service against the host system.

- Impacted products: Fedora, openSUSE Leap, QEMU, SUSE Linux Enterprise Desktop, SLES.
- Severity: 2/4.
- Creation date: 18/01/2017.

DESCRIPTION OF THE VULNERABILITY

The QEMU product can emulate the audio device ac97.

However, some memory areas are are not freed at software unplugging time.

An attacker, inside a guest system, can therefore create a memory leak in the ac97 audio device driver of QEMU, in order to trigger a denial of service against the host system.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/...




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