Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler. Number of rules (primarily dangerous function names) in C/C++ ruleset: 223 Examining data/xmix-2.1/xmix.c FINAL RESULTS: data/xmix-2.1/xmix.c:102:25: [4] (format) printf: If format strings can be influenced by an attacker, they can be exploited (CWE-134). Use a constant for the format specification. #define DPRINTF(x) printf x data/xmix-2.1/xmix.c:707:14: [2] (misc) open: Check when opening files - can an attacker redirect it (via symlinks), force the opening of special file type (e.g., device files), move things around to create a race condition, control its ancestors, or change its contents? (CWE-362). mixer_fd = open ("/dev/mixer", O_RDWR, 0); ANALYSIS SUMMARY: Hits = 2 Lines analyzed = 762 in approximately 0.03 seconds (24395 lines/second) Physical Source Lines of Code (SLOC) = 539 Hits@level = [0] 2 [1] 0 [2] 1 [3] 0 [4] 1 [5] 0 Hits@level+ = [0+] 4 [1+] 2 [2+] 2 [3+] 1 [4+] 1 [5+] 0 Hits/KSLOC@level+ = [0+] 7.42115 [1+] 3.71058 [2+] 3.71058 [3+] 1.85529 [4+] 1.85529 [5+] 0 Minimum risk level = 1 Not every hit is necessarily a security vulnerability. There may be other security vulnerabilities; review your code! See 'Secure Programming HOWTO' (https://dwheeler.com/secure-programs) for more information.