Vulnerability in Qemu
CVE-2020-14394
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.2 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (30.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Qemu — versions 6.1.50
- Fedoraproject Extra Packages For Enterprise Linux — versions 7.0
- Fedoraproject Fedora — versions 33, 37
- Red Hat Enterprise Linux — versions 5.0, 6.0, 7.0
- Red Hat OpenStack Platform — versions 10.0, 13.0
- Qemu — versions QEMU 6.1.50
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- gitlab.com/qemu-project/qemu/-/issues/646 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2023/03/msg00013.html (mailing-list)
Frequently asked questions
- What is CVE-2020-14394?
- CVE-2020-14394 is a low-severity vulnerability in Qemu, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 3.2/10. Published 2022-08-17.
- How severe is CVE-2020-14394?
- Low severity. CVSS v3 base score is 3.2 out of 10.
- Is CVE-2020-14394 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.