CVE-2019-20175

An issue was discovered in idedmacb in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSIIOCTLSENDCOMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 the size...

CVE-2021-3582

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMACMDCREATEMR" command due to improper memory remapping mremap. This flaw allows a malicious guest to crash the QEMU process on the host. The highest threat from this...

spice: insufficient validation of surface_id parameter can cause crash

A heap-based buffer overflow flaw was found in the way spice handled certain QXL commands related to the "surfaceid" parameter. A user in a guest could use this flaw to crash the host QEMU-KVM process or, possibly, execute arbitrary code with the privileges of the host QEMU-KVM process...