CVE-2020-25624
QEMU: usb: hcd-ohci: out-of-bound access issue while processing transfer descriptors
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 11, 2020
Updated · June 28, 2026
Description
A flaw was found in QEMU. An out-of-bounds read/write access issue was found in the USB OHCI controller emulator. This issue occurs while servicing transfer descriptors (TD), as the OHCI controller derives variables 'start_addr', 'end_addr', and 'len' from values supplied by the host controller driver. The host controller driver may supply values when using these variables, leading to an out-of-bounds access issue. This flaw allows a guest user or process to crash the QEMU process on the host, resulting in a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
CWE-787 · Out-of-bounds Write