A potential DoS issue was found in the virtio-fs shared file system daemon (virtiofsd) implementation of the QEMU. Virtiofsd is meant to share a host file system directory with a guest via virtio-fs device. The said DoS may occur on the host, if the guest was to open the maximum number of file descriptors under the shared directory. A guest user/process may use this flaw to cause DoS issue on the host.
Name: Yuval Avrahami (Palo Alto Networks)
Created qemu tracking bugs for this issue:
Affects: fedora-rawhide [bug 1830842]