CVE-2020-25723: Debian Linux
Low severity, CVSS 3.2. EPSS: 0.4% chance of exploitation in the next 30 days.
A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.
Affected products
Published 2020-12-02. Last modified 2026-06-17.