Project: libfido2

Language c++
OSS-Fuzz project link
Project repository link
Build status: Fuzzers succeeding: Build log
Build status: Code coverage succeeding: Build log
Build status: Fuzz Introspector succeeding: Build log
Fuzzer count 10
Lines of code 184551
Lines covered 41893
Code coverage 22.70%
Code coverage report Report link
Static reachability 81.10%
Fuzz Introspector report Report link (from 2025-03-27)
Fuzzer Code coverage (lines) Latest Report Comments
fuzz_assert 58.63% (avg: 58.63%, max: 58.63%) 2025-03-27
fuzz_attobj 30.27% (avg: 30.27%, max: 30.27%) 2025-03-27
fuzz_bio 50.7% (avg: 50.7%, max: 50.7%) 2025-03-27
fuzz_cred 57.12% (avg: 57.12%, max: 57.12%) 2025-03-27
fuzz_credman 50.72% (avg: 50.72%, max: 50.72%) 2025-03-27
fuzz_hid 38.21% (avg: 38.21%, max: 38.21%) 2025-03-27
fuzz_largeblob 44.49% (avg: 44.49%, max: 44.49%) 2025-03-27
fuzz_mgmt 56.85% (avg: 56.85%, max: 56.85%) 2025-03-27
fuzz_netlink 32.02% (avg: 32.02%, max: 32.02%) 2025-03-27
fuzz_pcsc 39.31% (avg: 39.31%, max: 39.31%) 2025-03-27

Historical Progression

Per Fuzzer Progression

Functions of interest to fuzz

This section outlines functions that may be of interest to fuzz. They are based on ranking functions that have a lot of complexity but currently exhibit low code coverage. The complexity is calculated based on the function itself as well as the functions called by the given function, i.e. the tree of code that the function triggers.


This is only a minor amount of introspection information available for this project. Please consult the Fuzz Introspector report for more information, e.g. the introspection table of all functions in the target project available here.

Function name Function source file Accumulated cyclomatic complexity Code coverage
save_seed /src/libfido2/fuzz/libfuzzer.c 109 0.0%
LLVMFuzzerCustomMutator /src/libfido2/fuzz/libfuzzer.c 107 0.0%
save_corpus /src/libfido2/fuzz/libfuzzer.c 55 0.0%
unpack /src/libfido2/fuzz/fuzz_netlink.c 51 0.0%
test /src/libfido2/fuzz/fuzz_netlink.c 50 0.0%
pack_dummy /src/libfido2/fuzz/fuzz_netlink.c 37 0.0%
prepare_dev /src/libfido2/fuzz/fuzz_bio.c 36 0.0%
pack /src/libfido2/fuzz/fuzz_netlink.c 32 0.0%
parse_mutate_flags /src/libfido2/fuzz/libfuzzer.c 13 0.0%
mutate /src/libfido2/fuzz/fuzz_netlink.c 11 0.0%