A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
https://www.openwall.com/lists/oss-security/2021/02/25/1
https://security.netapp.com/advisory/ntap-20210507-0003/
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Feepro100_stackoverflow1
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html