CVE-2020-27173

HIGH

vm-superio < 0.1.1 - Unauthenticated Denial of Service via Serial Console FIFO

Title source: llm
STIX 2.1

Description

In vm-superio before 0.1.1, the serial console FIFO can grow to unlimited memory usage when data is sent to the input source (i.e., standard input). This behavior cannot be reproduced from the guest side. When no rate limiting is in place, the host can be subject to memory pressure, impacting all other VMs running on the same host.

References (2)

Core 2
Core References
Third Party Advisory x_refsource_misc
https://github.com/rust-vmm/vm-superio/issues/17
Patch, Third Party Advisory x_refsource_misc
https://github.com/rust-vmm/vm-superio/pull/19

Scores

CVSS v3 7.5
EPSS 0.0151
EPSS Percentile 71.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-770
Status published
Products (1)
vm-superio_project/vm-superio < 0.1.1
Published Oct 16, 2020
Tracked Since Feb 18, 2026