An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.
Name: Gaoning Pan (Zhejiang University & Ant Security Light-Year Lab)
This issue does not affect the versions of the qemu-kvm package as shipped with Red Hat Enterprise Linux 5, 6, 7 and 8.
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1922719]
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):
Fixed by https://gitlab.com/qemu-project/qemu/-/commit/d05dcd94aee88