test/bntest.c:247: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_bntest_rand`.
Showing all 23 steps of the trace


test/bntest.c:247:5: Call
245.           goto err;
246.   
247.       BN_bntest_rand(a, 1024, 0, 0);
           ^
248.       for (i = 0; i < NUM0; i++) {
249.           BN_bntest_rand(b, 450 + i * 10, 0, 0);

crypto/bn/bn_rand.c:102:1: Parameter `rnd->top`
  100.   }
  101.   
  102. > int BN_bntest_rand(BIGNUM *rnd, int bits, int top, int bottom)
  103.   {
  104.       return bnrand(TESTING, rnd, bits, top, bottom);

crypto/bn/bn_rand.c:104:12: Call
  102.   int BN_bntest_rand(BIGNUM *rnd, int bits, int top, int bottom)
  103.   {
  104.       return bnrand(TESTING, rnd, bits, top, bottom);
                    ^
  105.   }
  106.   

crypto/bn/bn_rand.c:21:1: Parameter `rnd->top`
    19.   } BNRAND_FLAG;
    20.   
    21. > static int bnrand(BNRAND_FLAG flag, BIGNUM *rnd, int bits, int top, int bottom)
    22.   {
    23.       unsigned char *buf = NULL;

crypto/bn/bn_rand.c:29:9: Call
    27.           if (top != BN_RAND_TOP_ANY || bottom != BN_RAND_BOTTOM_ANY)
    28.               goto toosmall;
    29.           BN_zero(rnd);
                  ^
    30.           return 1;
    31.       }

crypto/bn/bn_lib.c:387:1: Parameter `a->top`
      385.   }
      386.   
      387. > int BN_set_word(BIGNUM *a, BN_ULONG w)
      388.   {
      389.       bn_check_top(a);

crypto/bn/bn_lib.c:390:9: Call
      388.   {
      389.       bn_check_top(a);
      390.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                     ^
      391.           return 0;
      392.       a->neg = 0;

crypto/bn/bn_lcl.h:651:1: Parameter `a->top`
        649.                            const BIGNUM *add, const BIGNUM *rem, BN_CTX *ctx);
        650.   
        651. > static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)
        652.   {
        653.       if (bits > (INT_MAX - BN_BITS2 + 1))

crypto/bn/bn_lcl.h:659:12: Call
        657.           return a;
        658.   
        659.       return bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2);
                          ^
        660.   }
        661.   

crypto/bn/bn_lib.c:273:1: Parameter `b->top`
          271.    */
          272.   
          273. > BIGNUM *bn_expand2(BIGNUM *b, int words)
          274.   {
          275.       bn_check_top(b);

crypto/bn/bn_lib.c:278:23: Call
          276.   
          277.       if (words > b->dmax) {
          278.           BN_ULONG *a = bn_expand_internal(b, words);
                                       ^
          279.           if (!a)
          280.               return NULL;

crypto/bn/bn_lib.c:235:1: <Offset trace>
233.   /* This is used by bn_expand2() */
234.   /* The caller MUST check that words > b->dmax before calling this */
235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
236.   {
237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: Parameter `b->top`
            233.   /* This is used by bn_expand2() */
            234.   /* The caller MUST check that words > b->dmax before calling this */
            235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
            236.   {
            237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: <Length trace>
233.   /* This is used by bn_expand2() */
234.   /* The caller MUST check that words > b->dmax before calling this */
235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
236.   {
237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: Parameter `words`
            233.   /* This is used by bn_expand2() */
            234.   /* The caller MUST check that words > b->dmax before calling this */
            235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
            236.   {
            237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:252:13: Call
            250.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
            251.       else
            252.           a = OPENSSL_zalloc(words * sizeof(*a));
                               ^
            253.       if (a == NULL) {
            254.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/mem.c:218:1: Parameter `num`
              216.   }
              217.   
              218. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
              219.   {
              220.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:220:17: Call
              218.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
              219.   {
              220.       void *ret = CRYPTO_malloc(num, file, line);
                                     ^
              221.   
              222.       FAILTEST();

crypto/mem.c:198:9: Assignment
                196.   
                197.       if (num == 0)
                198.           return NULL;
                               ^
                199.   
                200.       FAILTEST();

crypto/mem.c:220:5: Assignment
              218.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
              219.   {
              220.       void *ret = CRYPTO_malloc(num, file, line);
                         ^
              221.   
              222.       FAILTEST();

crypto/mem.c:225:5: Assignment
              223.       if (ret != NULL)
              224.           memset(ret, 0, num);
              225.       return ret;
                         ^
              226.   }
              227.   

crypto/bn/bn_lib.c:252:9: Assignment
            250.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
            251.       else
            252.           a = OPENSSL_zalloc(words * sizeof(*a));
                           ^
            253.       if (a == NULL) {
            254.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/bn/bn_lib.c:260:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_bntest_rand` 
            258.       assert(b->top <= words);
            259.       if (b->top > 0)
            260.           memcpy(a, b->d, sizeof(*a) * b->top);
                           ^
            261.   
            262.       return a;
