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CVE-2021-3416

Description

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.


Affected Software


CPE Name Name Version
qemu:qemu qemu 5.2.0
fedoraproject:fedora fedoraproject fedora 33
redhat:enterprise_linux redhat enterprise linux 7.0
redhat:enterprise_linux redhat enterprise linux 6.0
redhat:enterprise_linux redhat enterprise linux 8.0
debian:debian_linux debian debian linux 9.0
debian:debian_linux debian debian linux 10.0

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