Vigil@nce - QEMU: NULL pointer dereference via fdctrl_read_data/fdctrl_write_data
October 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: QEMU.
Consequences: denial of service on server, denial of service on service.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 29/09/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker, inside a guest system, can force a NULL pointer to be dereferenced via fdctrl_read_data/fdctrl_write_data() of QEMU, in order to trigger a denial of service on the host system.
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