test/bntest.c:616: error: BUFFER_OVERRUN_L3
  Offset: 0 Size: [0, 8388607] by call to `BN_rand`.
Showing all 14 steps of the trace


test/bntest.c:616:15: Call
614.   
615.       for (i = 0; i < NUM0; i++) {
616.           if (!(TEST_true(BN_rand(a, 512, 0, 0))
                     ^
617.                   && TEST_ptr(BN_copy(b, BN_value_one()))))
618.               goto err;

crypto/bn/bn_rand.c:106:1: Parameter `*rnd->d`
  104.       return bnrand(NORMAL, rnd, bits, top, bottom, ctx);
  105.   }
  106. > int BN_rand(BIGNUM *rnd, int bits, int top, int bottom)
  107.   {
  108.       return bnrand(NORMAL, rnd, bits, top, bottom, NULL);

crypto/bn/bn_rand.c:108:12: Call
  106.   int BN_rand(BIGNUM *rnd, int bits, int top, int bottom)
  107.   {
  108.       return bnrand(NORMAL, rnd, bits, top, bottom, NULL);
                    ^
  109.   }
  110.   

crypto/bn/bn_rand.c:23:1: Parameter `*rnd->d`
    21.   } BNRAND_FLAG;
    22.   
    23. > static int bnrand(BNRAND_FLAG flag, BIGNUM *rnd, int bits, int top, int bottom,
    24.                     BN_CTX *ctx)
    25.   {

test/bntest.c:616:15: Call
614.   
615.       for (i = 0; i < NUM0; i++) {
616.           if (!(TEST_true(BN_rand(a, 512, 0, 0))
                     ^
617.                   && TEST_ptr(BN_copy(b, BN_value_one()))))
618.               goto err;

crypto/bn/bn_rand.c:106:1: Parameter `*rnd->d`
  104.       return bnrand(NORMAL, rnd, bits, top, bottom, ctx);
  105.   }
  106. > int BN_rand(BIGNUM *rnd, int bits, int top, int bottom)
  107.   {
  108.       return bnrand(NORMAL, rnd, bits, top, bottom, NULL);

crypto/bn/bn_rand.c:108:12: Call
  106.   int BN_rand(BIGNUM *rnd, int bits, int top, int bottom)
  107.   {
  108.       return bnrand(NORMAL, rnd, bits, top, bottom, NULL);
                    ^
  109.   }
  110.   

crypto/bn/bn_rand.c:23:1: Parameter `*rnd->d`
    21.   } BNRAND_FLAG;
    22.   
    23. > static int bnrand(BNRAND_FLAG flag, BIGNUM *rnd, int bits, int top, int bottom,
    24.                     BN_CTX *ctx)
    25.   {

crypto/bn/bn_rand.c:33:9: Call
    31.           if (top != BN_RAND_TOP_ANY || bottom != BN_RAND_BOTTOM_ANY)
    32.               goto toosmall;
    33.           BN_zero(rnd);
                  ^
    34.           return 1;
    35.       }

crypto/bn/bn_lib.c:361:1: <Length trace>
359.   }
360.   
361. > int BN_set_word(BIGNUM *a, BN_ULONG w)
362.   {
363.       bn_check_top(a);

crypto/bn/bn_lib.c:361:1: Parameter `*a->d`
      359.   }
      360.   
      361. > int BN_set_word(BIGNUM *a, BN_ULONG w)
      362.   {
      363.       bn_check_top(a);

crypto/bn/bn_lib.c:364:9: Call
      362.   {
      363.       bn_check_top(a);
      364.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                     ^
      365.           return 0;
      366.       a->neg = 0;

crypto/bn/bn_lcl.h:660:1: Parameter `*a->d`
        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_lib.c:367:5: Array access: Offset: 0 Size: [0, 8388607] by call to `BN_rand` 
      365.           return 0;
      366.       a->neg = 0;
      367.       a->d[0] = w;
                 ^
      368.       a->top = (w ? 1 : 0);
      369.       a->flags &= ~BN_FLG_FIXED_TOP;

int BN_set_word(BIGNUM *a, BN_ULONG w)
{
    bn_check_top(a);
    if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
        return 0;
    a->neg = 0;
    a->d[0] = w;
    a->top = (w ? 1 : 0);
    a->flags &= ~BN_FLG_FIXED_TOP;
    bn_check_top(a);
    return 1;
}
['static int test_gf2m_add(void)\n{\n    BIGNUM *a = NULL, *b = NULL, *c = NULL;\n    int i, st = 0;\n    if (!TEST_ptr(a = BN_new())\n            || !TEST_ptr(b = BN_new())\n            || !TEST_ptr(c = BN_new()))\n        goto err;\n    for (i = 0; i < NUM0; i++) {\n        if (!(TEST_true(BN_rand(a, 512, 0, 0))\n                && TEST_ptr(BN_copy(b, BN_value_one()))))\n            goto err;\n        BN_set_negative(a, rand_neg());\n        BN_set_negative(b, rand_neg());\n        if (!(TEST_true(BN_GF2m_add(c, a, b))\n                && TEST_false((BN_is_odd(a) && BN_is_odd(c))\n                        || (!BN_is_odd(a) && !BN_is_odd(c)))))\n            goto err;\n        if (!(TEST_true(BN_GF2m_add(c, c, c))\n                && TEST_BN_eq_zero(c)))\n            goto err;\n    }\n    st = 1;\n err:\n    BN_free(a);\n    BN_free(b);\n    BN_free(c);\n    return st;\n}', 'int BN_rand(BIGNUM *rnd, int bits, int top, int bottom)\n{\n    return bnrand(NORMAL, rnd, bits, top, bottom, NULL);\n}', 'static int bnrand(BNRAND_FLAG flag, BIGNUM *rnd, int bits, int top, int bottom,\n                  BN_CTX *ctx)\n{\n    unsigned char *buf = NULL;\n    int b, ret = 0, bit, bytes, mask;\n    OPENSSL_CTX *libctx = bn_get_lib_ctx(ctx);\n    if (bits == 0) {\n        if (top != BN_RAND_TOP_ANY || bottom != BN_RAND_BOTTOM_ANY)\n            goto toosmall;\n        BN_zero(rnd);\n        return 1;\n    }\n    if (bits < 0 || (bits == 1 && top > 0))\n        goto toosmall;\n    bytes = (bits + 7) / 8;\n    bit = (bits - 1) % 8;\n    mask = 0xff << (bit + 1);\n    buf = OPENSSL_malloc(bytes);\n    if (buf == NULL) {\n        BNerr(BN_F_BNRAND, ERR_R_MALLOC_FAILURE);\n        goto err;\n    }\n    b = flag == NORMAL ? rand_bytes_ex(libctx, buf, bytes)\n                       : rand_priv_bytes_ex(libctx, buf, bytes);\n    if (b <= 0)\n        goto err;\n    if (flag == TESTING) {\n        int i;\n        unsigned char c;\n        for (i = 0; i < bytes; i++) {\n            if (rand_bytes_ex(libctx, &c, 1) <= 0)\n                goto err;\n            if (c >= 128 && i > 0)\n                buf[i] = buf[i - 1];\n            else if (c < 42)\n                buf[i] = 0;\n            else if (c < 84)\n                buf[i] = 255;\n        }\n    }\n    if (top >= 0) {\n        if (top) {\n            if (bit == 0) {\n                buf[0] = 1;\n                buf[1] |= 0x80;\n            } else {\n                buf[0] |= (3 << (bit - 1));\n            }\n        } else {\n            buf[0] |= (1 << bit);\n        }\n    }\n    buf[0] &= ~mask;\n    if (bottom)\n        buf[bytes - 1] |= 1;\n    if (!BN_bin2bn(buf, bytes, rnd))\n        goto err;\n    ret = 1;\n err:\n    OPENSSL_clear_free(buf, bytes);\n    bn_check_top(rnd);\n    return ret;\ntoosmall:\n    BNerr(BN_F_BNRAND, BN_R_BITS_TOO_SMALL);\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    a->flags &= ~BN_FLG_FIXED_TOP;\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}']