SB2020092526 - Infinite loop in QEMU USB OHCI controller emulator
Published: September 25, 2020 Updated: December 31, 2025
Security Bulletin ID
SB2020092526
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Infinite loop (CVE-ID: CVE-2020-25625)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the USB OHCI controller emulator of QEMU in hw/usb/hcd-ohci.c while servicing OHCI isochronous transfer descriptors (TD) in ohci_service_iso_td routine. A local privileged user can consume all available system resources and cause denial of service conditions.
Remediation
Install update from vendor's website.