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/cd5-0.1/cd5.c

FINAL RESULTS:

data/cd5-0.1/cd5.c:93:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char buffer[CD_FRAMESIZE];      /* return */
data/cd5-0.1/cd5.c:114:8:  [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).
  fd = open(device, O_RDONLY | O_NONBLOCK);
data/cd5-0.1/cd5.c:204:14:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
    unsigned char hash[128 / 8]; /* MD5 buffer */

ANALYSIS SUMMARY:

Hits = 3
Lines analyzed = 267 in approximately 0.04 seconds (7357 lines/second)
Physical Source Lines of Code (SLOC) = 130
Hits@level = [0]  13 [1]   0 [2]   3 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  16 [1+]   3 [2+]   3 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 123.077 [1+] 23.0769 [2+] 23.0769 [3+]   0 [4+]   0 [5+]   0
Dot directories skipped = 1 (--followdotdir overrides)
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.