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/msr-tools-1.3/cpuid.c
Examining data/msr-tools-1.3/version.h
Examining data/msr-tools-1.3/rdmsr.c
Examining data/msr-tools-1.3/wrmsr.c

FINAL RESULTS:

data/msr-tools-1.3/rdmsr.c:358:3:  [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.
		printf(pat, width, data);
data/msr-tools-1.3/rdmsr.c:132:3:  [3] (buffer) getopt_long:
  Some older implementations do not protect against internal buffer overflows
  (CWE-120, CWE-20). Check implementation on installation, or limit the size
  of all string inputs.
		getopt_long(argc, argv, short_options, long_options,
data/msr-tools-1.3/wrmsr.c:90:14:  [3] (buffer) getopt_long:
  Some older implementations do not protect against internal buffer overflows
  (CWE-120, CWE-20). Check implementation on installation, or limit the size
  of all string inputs.
	while ((c = getopt_long(argc, argv, short_options,
data/msr-tools-1.3/cpuid.c:41:3:  [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 devstr[64];
data/msr-tools-1.3/cpuid.c:45:8:  [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(devstr, O_RDONLY);
data/msr-tools-1.3/cpuid.c:67:9:  [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.
	static char string[5] = "xxxx";
data/msr-tools-1.3/rdmsr.c:112:21:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
		rdmsr_on_cpu(reg, atoi(namelist[dir_entries]->d_name));
data/msr-tools-1.3/rdmsr.c:216:2:  [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 msr_file_name[64];
data/msr-tools-1.3/rdmsr.c:219:2:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
	sprintf(msr_file_name, "/dev/cpu/%d/msr", cpu);
data/msr-tools-1.3/rdmsr.c:220:7:  [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(msr_file_name, O_RDONLY);
data/msr-tools-1.3/wrmsr.c:73:21:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
		wrmsr_on_cpu(reg, atoi(namelist[dir_entries]->d_name),
data/msr-tools-1.3/wrmsr.c:142:2:  [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 msr_file_name[64];
data/msr-tools-1.3/wrmsr.c:144:2:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
	sprintf(msr_file_name, "/dev/cpu/%d/msr", cpu);
data/msr-tools-1.3/wrmsr.c:145:7:  [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(msr_file_name, O_WRONLY);

ANALYSIS SUMMARY:

Hits = 14
Lines analyzed = 744 in approximately 0.03 seconds (21715 lines/second)
Physical Source Lines of Code (SLOC) = 593
Hits@level = [0]  26 [1]   0 [2]  11 [3]   2 [4]   1 [5]   0
Hits@level+ = [0+]  40 [1+]  14 [2+]  14 [3+]   3 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 67.4536 [1+] 23.6088 [2+] 23.6088 [3+] 5.05902 [4+] 1.68634 [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.