CVE-2022-2962

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.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1018055&gt;
• <https://bugzilla.redhat.com/show_bug.cgi?id=2120631&gt;
• <https://gitlab.com/qemu-project/qemu/-/issues/1171&gt;