Arbitrary Code Execution

qemu is vulnerable to arbitrary code execution. The vulnerability exists through a out-of-bounds read/write access flaw in the SDHCI Controller emulator of QEMU,hw/sd/sdhci.c mishandles a write operation in the SDHC_BLKSIZE case allows an attacker inside the guest could use this flaw to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host.