CVE-2021-4206

A flaw was found in the QXL display device emulation in QEMU. An integer
overflow in the cursor_alloc() function can lead to the allocation of a
small cursor object followed by a subsequent heap-based buffer overflow.
This flaw allows a malicious privileged guest user to crash the QEMU
process on the host or potentially execute arbitrary code within the
context of the QEMU process.

Bugs

• <https://bugzilla.redhat.com/show_bug.cgi?id=2036998&gt;