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/libbsd-arc4random-perl-1.50/arc4random.c
Examining data/libbsd-arc4random-perl-1.50/arc4rnd_xs.c

FINAL RESULTS:

data/libbsd-arc4random-perl-1.50/arc4random.c:202:2:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
	memcpy(rdat.rnd, __vcsid, MIN(sizeof(__vcsid), sizeof(rdat.rnd)));
data/libbsd-arc4random-perl-1.50/arc4random.c:211:7:  [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(__randomdev, O_RDONLY);
data/libbsd-arc4random-perl-1.50/arc4random.c:451:3:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
		memcpy(buf, w32_buf + i, j);
data/libbsd-arc4random-perl-1.50/arc4random.c:471:2:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
	memcpy(buf, &num, sizeof(num));
data/libbsd-arc4random-perl-1.50/arc4random.c:476:12:  [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).
	if ((fd = open(__randomdev, O_WRONLY)) != -1) {
data/libbsd-arc4random-perl-1.50/arc4random.c:213:16:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
		sz = (size_t)read(fd, rdat.rnd, sizeof(rdat.rnd));

ANALYSIS SUMMARY:

Hits = 6
Lines analyzed = 861 in approximately 0.03 seconds (28364 lines/second)
Physical Source Lines of Code (SLOC) = 627
Hits@level = [0]   0 [1]   1 [2]   5 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]   6 [1+]   6 [2+]   5 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 9.56938 [1+] 9.56938 [2+] 7.97448 [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.