Amazon · Firecracker · CVE-2020-16843
**Name of the Vulnerable Software and Affected Versions**
Firecracker versions 0.20.x through 0.20.0
Firecracker versions 0.21.x through 0.21.1
**Description**
The network stack can freeze under heavy ingress traffic, resulting 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.
**Recommendations**
For Firecracker versions 0.20.x through 0.20.0, update to version 0.20.1 or later.
For Firecracker versions 0.21.x through 0.21.1, update to version 0.21.2 or later.