CVE-2020-14394
First published: Tue Dec 15 2020(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU qemu | =6.1.50 | |
| Fedoraproject Extra Packages For Enterprise Linux | =7.0 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =37 | |
| Redhat Openstack Platform | =10.0 | |
| Redhat Openstack Platform | =13.0 | |
| Redhat Enterprise Linux | =5.0 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 | |
| redhat/qemu-kvm | <7.1.0 | 7.1.0 |
| debian/qemu | <=1:5.2+dfsg-11+deb11u2 | 1:5.2+dfsg-11+deb11u3 1:7.2+dfsg-7+deb12u7 1:9.0.2+ds-2 1:9.1.0+ds-3 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1908004
- https://gitlab.com/qemu-project/qemu/-/issues/646
- https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/
- https://launchpad.net/bugs/cve/CVE-2020-14394
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1908051
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1908050
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1908004#c0
- https://access.redhat.com/support/policy/updates/errata/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1908004#c12
- https://gitlab.com/qemu-project/qemu/-/commit/effaf5a240e03020f4ae953e10b764622c3e87cc
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/
- https://security-tracker.debian.org/tracker/CVE-2020-14394
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14394
- https://nvd.nist.gov/vuln/detail/CVE-2020-14394
- https://ubuntu.com/security/CVE-2020-14394
Frequently Asked Questions
What is CVE-2020-14394?
CVE-2020-14394 is an infinite loop flaw in the USB xHCI controller emulation of QEMU.
How does CVE-2020-14394 impact the QEMU process?
CVE-2020-14394 allows a privileged guest user to hang the QEMU process on the host, resulting in a denial of service.
Which software versions are affected by CVE-2020-14394?
QEMU versions up to and excluding 7.1.0 are affected by CVE-2020-14394.
What is the severity of CVE-2020-14394?
The severity of CVE-2020-14394 is low, with a CVSS score of 3.2.
How can I fix CVE-2020-14394?
To fix CVE-2020-14394, update your QEMU installation to version 7.1.0 or later.
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