CVE-2022-2962: Qemu

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

Affected products

• Qemu Qemu: from 4.2.0, up to and including 7.1.0

Published 2022-09-13. Last modified 2026-06-17.