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/cbor2-5.2.0/source/decoder.c
Examining data/cbor2-5.2.0/source/decoder.h
Examining data/cbor2-5.2.0/source/encoder.c
Examining data/cbor2-5.2.0/source/encoder.h
Examining data/cbor2-5.2.0/source/halffloat.c
Examining data/cbor2-5.2.0/source/halffloat.h
Examining data/cbor2-5.2.0/source/module.c
Examining data/cbor2-5.2.0/source/module.h
Examining data/cbor2-5.2.0/source/tags.c
Examining data/cbor2-5.2.0/source/tags.h

FINAL RESULTS:

data/cbor2-5.2.0/source/decoder.c:350:17:  [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, data, size);
data/cbor2-5.2.0/source/decoder.c:416:33:  [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.
        union { uint64_t value; char buf[sizeof(uint64_t)]; } u64;
data/cbor2-5.2.0/source/decoder.c:417:33:  [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.
        union { uint32_t value; char buf[sizeof(uint32_t)]; } u32;
data/cbor2-5.2.0/source/decoder.c:418:33:  [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.
        union { uint16_t value; char buf[sizeof(uint16_t)]; } u16;
data/cbor2-5.2.0/source/decoder.c:419:33:  [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.
        union { uint8_t value;  char buf[sizeof(uint8_t)];  } u8;
data/cbor2-5.2.0/source/decoder.c:1523:9:  [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.
        char buf[sizeof(uint16_t)];
data/cbor2-5.2.0/source/decoder.c:1541:9:  [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.
        char buf[sizeof(float)];
data/cbor2-5.2.0/source/decoder.c:1561:9:  [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.
        char buf[sizeof(double)];
data/cbor2-5.2.0/source/encoder.c:341:5:  [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 buf[sizeof(LeadByte) + sizeof(uint64_t)];
data/cbor2-5.2.0/source/encoder.c:1392:9:  [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.
        char buf[sizeof(double)];
data/cbor2-5.2.0/source/encoder.c:1494:9:  [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.
        char buf[sizeof(double)];
data/cbor2-5.2.0/source/encoder.c:1500:9:  [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.
        char buf[sizeof(float)];
data/cbor2-5.2.0/source/encoder.c:1505:9:  [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.
        char buf[sizeof(uint16_t)];
data/cbor2-5.2.0/source/decoder.c:76:20:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    Py_VISIT(self->read);
data/cbor2-5.2.0/source/decoder.c:88:20:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    Py_CLEAR(self->read);
data/cbor2-5.2.0/source/decoder.c:177:45:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    PyObject *ret = PyMethod_GET_SELF(self->read);
data/cbor2-5.2.0/source/decoder.c:187:21:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    PyObject *tmp, *read;
data/cbor2-5.2.0/source/decoder.c:194:11:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    if (!(read && PyCallable_Check(read))) {
data/cbor2-5.2.0/source/decoder.c:194:36:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    if (!(read && PyCallable_Check(read))) {
data/cbor2-5.2.0/source/decoder.c:201:17:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    tmp = self->read;
data/cbor2-5.2.0/source/decoder.c:202:18:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    self->read = read;
data/cbor2-5.2.0/source/decoder.c:345:50:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
        obj = PyObject_CallFunctionObjArgs(self->read, size_obj, NULL);
data/cbor2-5.2.0/source/decoder.c:1633:23:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    save_read = self->read;
data/cbor2-5.2.0/source/decoder.c:1637:19:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
        if (self->read) {
data/cbor2-5.2.0/source/decoder.c:1639:29:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
            Py_DECREF(self->read);
data/cbor2-5.2.0/source/decoder.h:8:15:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    PyObject *read;    // cached read() method of fp
data/cbor2-5.2.0/source/module.c:947:19:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    INTERN_STRING(read);

ANALYSIS SUMMARY:

Hits = 27
Lines analyzed = 5698 in approximately 0.26 seconds (21967 lines/second)
Physical Source Lines of Code (SLOC) = 4751
Hits@level = [0]   0 [1]  14 [2]  13 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  27 [1+]  27 [2+]  13 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 5.68301 [1+] 5.68301 [2+] 2.73627 [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.