test/bntest.c:1840: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_rand`.
Showing all 23 steps of the trace


test/bntest.c:1840:9: Call
1838.        * Test BN_rand for degenerate cases with |top| and |bottom| parameters.
1839.        */
1840.       if (BN_rand(bn, 0, 0 /* top */ , 0 /* bottom */ )) {
                ^
1841.           fprintf(stderr, "BN_rand1 gave a bad result.\n");
1842.           goto err;

crypto/bn/bn_rand.c:96:1: Parameter `rnd->top`
  94.   }
  95.   
  96. > int BN_rand(BIGNUM *rnd, int bits, int top, int bottom)
  97.   {
  98.       return bnrand(0, rnd, bits, top, bottom);

crypto/bn/bn_rand.c:98:12: Call
  96.   int BN_rand(BIGNUM *rnd, int bits, int top, int bottom)
  97.   {
  98.       return bnrand(0, rnd, bits, top, bottom);
                    ^
  99.   }
  100.   

crypto/bn/bn_rand.c:17:1: Parameter `rnd->top`
    15.   #include <openssl/sha.h>
    16.   
    17. > static int bnrand(int pseudorand, BIGNUM *rnd, int bits, int top, int bottom)
    18.   {
    19.       unsigned char *buf = NULL;

crypto/bn/bn_rand.c:26:9: Call
    24.           if (top != BN_RAND_TOP_ANY || bottom != BN_RAND_BOTTOM_ANY)
    25.               goto toosmall;
    26.           BN_zero(rnd);
                  ^
    27.           return 1;
    28.       }

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_rand` 
            269.       assert(b->top <= words);
            270.       if (b->top > 0)
            271.           memcpy(a, b->d, sizeof(*a) * b->top);
                           ^
            272.   
            273.       return a;
