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.
[
{
"product": "QEMU",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Will be fixed in QEMU 7.2.0-rc0"
}
]
}
]