Vigil@nce - QEMU: NULL pointer dereference via pci_change_irq_level
October 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability
SYNTHESIS OF THE VULNERABILITY
– Impacted products: QEMU.
– Severity: 1/4.
– 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 pci_change_irq_level() 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-pci-change-irq-level-33448