Description
In Firecracker 0.20.x before 0.20.1 and 0.21.x before 0.21.2, the network stack can freeze under heavy ingress traffic. This can result in a denial of service on the microVM when it is configured with a single network interface, and an availability problem for the microVM network interface on which the issue is triggered.
Metrics
CVSS 3.1 5.9/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.openwall.com/lists/oss-security/2020/08/13/1Mailing List, Third Party Advisory
- https://github.com/firecracker-microvm/firecracker/issues/2057Mitigation, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/08/13/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/08/13/1Mailing List, Third Party Advisory
- https://github.com/firecracker-microvm/firecracker/issues/2057Mitigation, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/08/13/1Mailing List, Third Party Advisory
Timeline
- Published
- Aug 4, 2020
- Last modified
- Jun 17, 2026
- NVD status
- Modified