CVE-2020-14394 (GCVE-0-2020-14394)

Vulnerability from cvelistv5 – Published: 2022-08-17 00:00 – Updated: 2024-08-04 12:46
VLAI
Summary
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.
Severity
3.2 (Low)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a QEMU Affected: QEMU 6.1.50
Show details on NVD website
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T11:52:59+00:00",
      "cve": "CVE-2020-14394",
      "id": "CVE-2020-14394",
      "initial_release_date": "2020-12-15T00:00:00+00:00",
      "product_status:known_affected": "111",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "QEMU: infinite loop in xhci_ring_chain_length() in hw/usb/hcd-xhci.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-14394.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.