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This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2

SYNTHESIS OF THE VULNERABILITY

– Impacted products: QEMU.
– Severity: 2/4.
– Consequences: denial of service on server, denial of service on
service.
– Provenance: user shell.
– Confidence: confirmed by the editor (5/5).
– Creation date: 28/01/2021.

DESCRIPTION OF THE VULNERABILITY

An attacker, inside a guest system, can force a NULL pointer to be
dereferenced via Floopy Disk Emulator of QEMU, in order to trigger
a denial of service on the host system.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/QEMU-NULL-pointer-dereference-via-Floopy-Disk-Emulator-34427