CVE-2021-3929

EIP tracks 1 public exploit for CVE-2021-3929. PoCs published by QiuhaoLi.

AI-analyzed exploit summary This repository contains a functional VM escape PoC for CVE-2021-3929 and CVE-2021-3947, targeting QEMU's NVMe and HDA emulation. The exploit leverages memory corruption to leak host addresses and achieve arbitrary code execution on the host system.

A DMA reentrancy issue was found in the NVM Express Controller (NVME) emulation in QEMU. This CVE is similar to CVE-2021-3750 and, just like it, when the reentrancy write triggers the reset function nvme_ctrl_reset(), data structs will be freed leading to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition or, potentially, executing arbitrary code within the context of the QEMU process on the host.