test/bntest.c:616: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_rand`.
Showing all 18 steps of the trace


test/bntest.c:617:20: Call
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;
619.           BN_set_negative(a, rand_neg());

crypto/bn/bn_lib.c:281:1: Parameter `a->top`
  279.   }
  280.   
  281. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
  282.   {
  283.       bn_check_top(b);

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: 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_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:245:1: Parameter `*b->d`
          243.    */
          244.   
          245. > BIGNUM *bn_expand2(BIGNUM *b, int words)
          246.   {
          247.       if (words > b->dmax) {

crypto/bn/bn_lib.c:248:23: Call
          246.   {
          247.       if (words > b->dmax) {
          248.           BN_ULONG *a = bn_expand_internal(b, words);
                                       ^
          249.           if (!a)
          250.               return NULL;

crypto/bn/bn_lib.c:209:1: <Offset trace>
207.   /* This is used by bn_expand2() */
208.   /* The caller MUST check that words > b->dmax before calling this */
209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
210.   {
211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: Parameter `b->top`
            207.   /* This is used by bn_expand2() */
            208.   /* The caller MUST check that words > b->dmax before calling this */
            209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
            210.   {
            211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: <Length trace>
207.   /* This is used by bn_expand2() */
208.   /* The caller MUST check that words > b->dmax before calling this */
209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
210.   {
211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: Parameter `*b->d`
            207.   /* This is used by bn_expand2() */
            208.   /* The caller MUST check that words > b->dmax before calling this */
            209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
            210.   {
            211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:232:9: Array access: Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_rand` 
            230.       assert(b->top <= words);
            231.       if (b->top > 0)
            232.           memcpy(a, b->d, sizeof(*a) * b->top);
                           ^
            233.   
            234.       return a;
