Improper Input Validation
The package github.com/snapcore/snapd fails to perform sufficient validation of snap content interface and layout paths, resulting in the ability for snaps to inject arbitrary "AppArmor" policy rules via malformed content interface and layout declarations and hence escape strict snap confinement. This issue affects github.com/snapcore/snapd package versions prior to 2.54.3, and 3.9.9-0sdhd5.
CWE-20 - Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.