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5ec1cff/FuseFixer ★ 427 30 APPLICATION

FuseFixer is an Android Xposed module that hooks into the MediaProvider's FUSE daemon to prevent package name existence leakage via Unicode Default_Ignorable_Code_Points. The module intercepts path comparison functions (strcasecmp, EqualsIgnoreCase) and access control checks (is_package_owned_path, is_app_accessible_path, is_bpf_backing_path) in the native libfuse_jni.so library, stripping out ignorable code points before evaluation. This closes a vulnerability where attackers could bypass directory access restrictions on /storage/emulated/.../Android/data by inserting invisible Unicode characters. The project includes a custom ELF parser for dynamic symbol resolution, a maps scanner, and a debug UI for testing. The native code is written in C++20 and demonstrates deep understanding of Android's FUSE implementation, kernel casefold behavior, and FUSE BPF internals.

RATING: 8.8/10 MAINT: active DRIFT: low
#xposed-module #android-security #fuse-daemon #unicode-normalization #elf-parser #native-hooking #media-provider
▸ 3 reusable components found
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