CVE-2020-14394

Public Exploit

Description

An infinite loop flaw was found in the USB xHCI controller emulation of QEMU while computing the length of the Transfer Request Block (TRB) Ring. This flaw allows a privileged guest user to hang the QEMU process on the host, resulting in a denial of service.

References

Link	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1908004	issue tracking exploit third party advisory
https://gitlab.com/qemu-project/qemu/-/issues/646	issue tracking patch exploit third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/	vendor advisory
https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html	mailing list

Frequently Asked Questions

What is the severity of CVE-2020-14394?: CVE-2020-14394 has been scored as a low severity vulnerability.
How to fix CVE-2020-14394?: To fix CVE-2020-14394, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-14394 being actively exploited in the wild?: It is possible that CVE-2020-14394 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-14394?: CVE-2020-14394 affects n/a QEMU.

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Description

Category

CWE-835 – Loop with Unreachable Exit Condition ('Infinite Loop')

References

Frequently Asked Questions