test/bntest.c:1089: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_set_word`.
Showing all 23 steps of the trace


test/bntest.c:1078:23: Call
1076.   {
1077.       BIGNUM *a = getBN(s, "A");
1078.       BIGNUM *lshift1 = getBN(s, "LShift1");
                              ^
1079.       BIGNUM *zero = BN_new();
1080.       BIGNUM *ret = BN_new();

test/bntest.c:115:9: Call
  113.       }
  114.   
  115.       if (parseBN(&ret, hex) != (int)strlen(hex)) {
                 ^
  116.           fprintf(stderr, "Could not decode '%s'.\n", hex);
  117.           return NULL;

test/bntest.c:95:12: Call
    93.   {
    94.       *out = NULL;
    95.       return BN_hex2bn(out, in);
                     ^
    96.   }
    97.   

crypto/bn/bn_print.c:126:1: Parameter `(*bn)->top`
      124.   }
      125.   
      126. > int BN_hex2bn(BIGNUM **bn, const char *a)
      127.   {
      128.       BIGNUM *ret = NULL;

test/bntest.c:1089:5: Call
1087.           goto err;
1088.   
1089.       BN_zero(zero);
            ^
1090.   
1091.       if (!BN_set_word(two, 2)

crypto/bn/bn_lib.c:395:1: Parameter `a->top`
  393.   }
  394.   
  395. > int BN_set_word(BIGNUM *a, BN_ULONG w)
  396.   {
  397.       bn_check_top(a);

crypto/bn/bn_lib.c:398:9: Call
  396.   {
  397.       bn_check_top(a);
  398.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                 ^
  399.           return (0);
  400.       a->neg = 0;

crypto/bn/bn_lcl.h:660:1: Parameter `a->top`
    658.                            const BIGNUM *add, const BIGNUM *rem, BN_CTX *ctx);
    659.   
    660. > static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)
    661.   {
    662.       if (bits > (INT_MAX - BN_BITS2 + 1))

crypto/bn/bn_lcl.h:668:12: Call
    666.           return a;
    667.   
    668.       return bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2);
                      ^
    669.   }
    670.   

crypto/bn/bn_lib.c:284:1: Parameter `b->top`
      282.    */
      283.   
      284. > BIGNUM *bn_expand2(BIGNUM *b, int words)
      285.   {
      286.       bn_check_top(b);

crypto/bn/bn_lib.c:289:23: Call
      287.   
      288.       if (words > b->dmax) {
      289.           BN_ULONG *a = bn_expand_internal(b, words);
                                   ^
      290.           if (!a)
      291.               return NULL;

crypto/bn/bn_lib.c:246:1: <Offset trace>
244.   /* This is used by bn_expand2() */
245.   /* The caller MUST check that words > b->dmax before calling this */
246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
247.   {
248.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:246:1: Parameter `b->top`
        244.   /* This is used by bn_expand2() */
        245.   /* The caller MUST check that words > b->dmax before calling this */
        246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
        247.   {
        248.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:246:1: <Length trace>
244.   /* This is used by bn_expand2() */
245.   /* The caller MUST check that words > b->dmax before calling this */
246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
247.   {
248.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:246:1: Parameter `words`
        244.   /* This is used by bn_expand2() */
        245.   /* The caller MUST check that words > b->dmax before calling this */
        246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
        247.   {
        248.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:263:13: Call
        261.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
        262.       else
        263.           a = OPENSSL_zalloc(words * sizeof(*a));
                           ^
        264.       if (a == NULL) {
        265.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/mem.c:186:1: Parameter `num`
          184.   }
          185.   
          186. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
          187.   {
          188.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:188:17: Call
          186.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
          187.   {
          188.       void *ret = CRYPTO_malloc(num, file, line);
                                 ^
          189.   
          190.       FAILTEST();

crypto/mem.c:166:9: Assignment
            164.   
            165.       if (num == 0)
            166.           return NULL;
                           ^
            167.   
            168.       FAILTEST();

crypto/mem.c:188:5: Assignment
          186.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
          187.   {
          188.       void *ret = CRYPTO_malloc(num, file, line);
                     ^
          189.   
          190.       FAILTEST();

crypto/mem.c:193:5: Assignment
          191.       if (ret != NULL)
          192.           memset(ret, 0, num);
          193.       return ret;
                     ^
          194.   }
          195.   

crypto/bn/bn_lib.c:263:9: Assignment
        261.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
        262.       else
        263.           a = OPENSSL_zalloc(words * sizeof(*a));
                       ^
        264.       if (a == NULL) {
        265.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/bn/bn_lib.c:271:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_set_word` 
        269.       assert(b->top <= words);
        270.       if (b->top > 0)
        271.           memcpy(a, b->d, sizeof(*a) * b->top);
                       ^
        272.   
        273.       return a;

static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
{
    BN_ULONG *a = NULL;
    bn_check_top(b);
    if (words > (INT_MAX / (4 * BN_BITS2))) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);
        return NULL;
    }
    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);
        return (NULL);
    }
    if (BN_get_flags(b, BN_FLG_SECURE))
        a = OPENSSL_secure_zalloc(words * sizeof(*a));
    else
        a = OPENSSL_zalloc(words * sizeof(*a));
    if (a == NULL) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);
        return (NULL);
    }
    assert(b->top <= words);
    if (b->top > 0)
        memcpy(a, b->d, sizeof(*a) * b->top);
    return a;
}
['static int file_lshift1(STANZA *s)\n{\n    BIGNUM *a = getBN(s, "A");\n    BIGNUM *lshift1 = getBN(s, "LShift1");\n    BIGNUM *zero = BN_new();\n    BIGNUM *ret = BN_new();\n    BIGNUM *two = BN_new();\n    BIGNUM *remainder = BN_new();\n    int st = 0;\n    if (a == NULL || lshift1 == NULL || zero == NULL\n            || ret == NULL || two == NULL || remainder == NULL)\n        goto err;\n    BN_zero(zero);\n    if (!BN_set_word(two, 2)\n            || !BN_add(ret, a, a)\n            || !equalBN("A + A", lshift1, ret)\n            || !BN_mul(ret, a, two, ctx)\n            || !equalBN("A * 2", lshift1, ret)\n            || !BN_div(ret, remainder, lshift1, two, ctx)\n            || !equalBN("LShift1 / 2", a, ret)\n            || !equalBN("LShift1 % 2", zero, remainder)\n            || !BN_lshift1(ret, a)\n            || !equalBN("A << 1", lshift1, ret)\n            || !BN_rshift1(ret, lshift1)\n            || !equalBN("LShift >> 1", a, ret)\n            || !BN_rshift1(ret, lshift1)\n            || !equalBN("LShift >> 1", a, ret))\n        goto err;\n    if (!BN_set_bit(lshift1, 0)\n            || !BN_div(ret, NULL   , lshift1, two, ctx)\n            || !equalBN("(LShift1 | 1) / 2", a, ret)\n            || !BN_rshift1(ret, lshift1)\n            || !equalBN("(LShift | 1) >> 1", a, ret))\n        goto err;\n    st = 1;\nerr:\n    BN_free(a);\n    BN_free(lshift1);\n    BN_free(zero);\n    BN_free(ret);\n    BN_free(two);\n    BN_free(remainder);\n    return st;\n}', 'static BIGNUM *getBN(STANZA *s, const char *attribute)\n{\n    const char *hex;\n    BIGNUM *ret = NULL;\n    if ((hex = findattr(s, attribute)) == NULL) {\n        fprintf(stderr, "Can\'t find %s in test at line %d\\n",\n                attribute, s->start);\n        return NULL;\n    }\n    if (parseBN(&ret, hex) != (int)strlen(hex)) {\n        fprintf(stderr, "Could not decode \'%s\'.\\n", hex);\n        return NULL;\n    }\n    return ret;\n}', 'static int parseBN(BIGNUM **out, const char *in)\n{\n    *out = NULL;\n    return BN_hex2bn(out, in);\n}', "int BN_hex2bn(BIGNUM **bn, const char *a)\n{\n    BIGNUM *ret = NULL;\n    BN_ULONG l = 0;\n    int neg = 0, h, m, i, j, k, c;\n    int num;\n    if ((a == NULL) || (*a == '\\0'))\n        return (0);\n    if (*a == '-') {\n        neg = 1;\n        a++;\n    }\n    for (i = 0; i <= (INT_MAX/4) && isxdigit((unsigned char)a[i]); i++)\n        continue;\n    if (i == 0 || i > INT_MAX/4)\n        goto err;\n    num = i + neg;\n    if (bn == NULL)\n        return (num);\n    if (*bn == NULL) {\n        if ((ret = BN_new()) == NULL)\n            return (0);\n    } else {\n        ret = *bn;\n        BN_zero(ret);\n    }\n    if (bn_expand(ret, i * 4) == NULL)\n        goto err;\n    j = i;\n    m = 0;\n    h = 0;\n    while (j > 0) {\n        m = ((BN_BYTES * 2) <= j) ? (BN_BYTES * 2) : j;\n        l = 0;\n        for (;;) {\n            c = a[j - m];\n            k = OPENSSL_hexchar2int(c);\n            if (k < 0)\n                k = 0;\n            l = (l << 4) | k;\n            if (--m <= 0) {\n                ret->d[h++] = l;\n                break;\n            }\n        }\n        j -= (BN_BYTES * 2);\n    }\n    ret->top = h;\n    bn_correct_top(ret);\n    *bn = ret;\n    bn_check_top(ret);\n    if (ret->top != 0)\n        ret->neg = neg;\n    return (num);\n err:\n    if (*bn == NULL)\n        BN_free(ret);\n    return (0);\n}", 'int BN_set_word(BIGNUM *a, BN_ULONG w)\n{\n    bn_check_top(a);\n    if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)\n        return (0);\n    a->neg = 0;\n    a->d[0] = w;\n    a->top = (w ? 1 : 0);\n    bn_check_top(a);\n    return (1);\n}', 'static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)\n{\n    if (bits > (INT_MAX - BN_BITS2 + 1))\n        return NULL;\n    if (((bits+BN_BITS2-1)/BN_BITS2) <= (a)->dmax)\n        return a;\n    return bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2);\n}', 'BIGNUM *bn_expand2(BIGNUM *b, int words)\n{\n    bn_check_top(b);\n    if (words > b->dmax) {\n        BN_ULONG *a = bn_expand_internal(b, words);\n        if (!a)\n            return NULL;\n        if (b->d) {\n            OPENSSL_cleanse(b->d, b->dmax * sizeof(b->d[0]));\n            bn_free_d(b);\n        }\n        b->d = a;\n        b->dmax = words;\n    }\n    bn_check_top(b);\n    return b;\n}', 'static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)\n{\n    BN_ULONG *a = NULL;\n    bn_check_top(b);\n    if (words > (INT_MAX / (4 * BN_BITS2))) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);\n        return NULL;\n    }\n    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);\n        return (NULL);\n    }\n    if (BN_get_flags(b, BN_FLG_SECURE))\n        a = OPENSSL_secure_zalloc(words * sizeof(*a));\n    else\n        a = OPENSSL_zalloc(words * sizeof(*a));\n    if (a == NULL) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);\n        return (NULL);\n    }\n    assert(b->top <= words);\n    if (b->top > 0)\n        memcpy(a, b->d, sizeof(*a) * b->top);\n    return a;\n}', 'void *CRYPTO_zalloc(size_t num, const char *file, int line)\n{\n    void *ret = CRYPTO_malloc(num, file, line);\n    FAILTEST();\n    if (ret != NULL)\n        memset(ret, 0, num);\n    return ret;\n}', 'void *CRYPTO_malloc(size_t num, const char *file, int line)\n{\n    void *ret = NULL;\n    if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)\n        return malloc_impl(num, file, line);\n    if (num == 0)\n        return NULL;\n    FAILTEST();\n    allow_customize = 0;\n#ifndef OPENSSL_NO_CRYPTO_MDEBUG\n    if (call_malloc_debug) {\n        CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);\n        ret = malloc(num);\n        CRYPTO_mem_debug_malloc(ret, num, 1, file, line);\n    } else {\n        ret = malloc(num);\n    }\n#else\n    osslargused(file); osslargused(line);\n    ret = malloc(num);\n#endif\n    return ret;\n}']