CVE-2020-14394: fedoraproject extra_packages_for_enterprise_linux Loop with Unreachable Exit Condition
Vulnerability summary
CVE-2020-14394 is a low (CVSS 3.2) Loop with Unreachable Exit Condition vulnerability in fedoraproject extra_packages_for_enterprise_linux. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 33.1% of scored vulnerabilities. 2 public exploits are recorded.
Not severe (CVSS 3.2, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 17-08-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated3.2LowCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated3.2LowCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
EPSS trend
Probability
0.39%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.39% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
2 foundExploit Reference (bugzilla.redhat.com)
Maturity: unknown
Exploit Reference (gitlab.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Fedoraproject2 products
- extra_packages_for_enterprise_linux7.0
- fedoraEOL33 | 37
Redhat2 products
- enterprise_linuxEOL5.0 | 6.0 | 7.0 | 8.0 | 9.0
- openstack_platform10.0 | 13.0
Debian1 product
- qemu< 1:7.1+dfsg-1
Qemu1 product
- qemu6.1.50
Ubuntu1 product
- qemu< 2.0.0+dfsg-2ubuntu1.47+esm6 | < 1:2.5+dfsg-5ubuntu10.51+esm4 | < 1:2.11+dfsg-1ubuntu7.42+esm5 | < 1:4.2-3ubuntu6.28 | < 1:6.2+dfsg-2ubuntu6.16
5 vendors · 7 products
References
9 links- lists.fedoraproject.org/archives/…Vendor Advisory
