dexdump in Android SDK before 2.3 does not properly perform structural verification, which allows user-assisted remote attackers to cause a denial of service (dexdump crash) and possibly execute arbitrary code via a malformed APK or dex file that calls a method using more arguments than the number of register that have been declared for that method.
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.