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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-vulne...

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/...




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