crypto/bn/bn_exp.c:1343: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_mod_mul`.
Showing all 29 steps of the trace


crypto/bn/bn_exp.c:1343:22: Call
1341.           if (BN_is_bit_set(p, wstart) == 0) {
1342.               if (!start)
1343.                   if (!BN_mod_mul(r, r, r, m, ctx))
                             ^
1344.                       goto err;
1345.               if (wstart == 0)

crypto/bn/bn_mod.c:193:1: Parameter `r->top`
  191.   
  192.   /* slow but works */
  193. > int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
  194.                  BN_CTX *ctx)
  195.   {

crypto/bn/bn_exp.c:1343:22: Call
1341.           if (BN_is_bit_set(p, wstart) == 0) {
1342.               if (!start)
1343.                   if (!BN_mod_mul(r, r, r, m, ctx))
                             ^
1344.                       goto err;
1345.               if (wstart == 0)

crypto/bn/bn_mod.c:193:1: Parameter `r->top`
  191.   
  192.   /* slow but works */
  193. > int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
  194.                  BN_CTX *ctx)
  195.   {

crypto/bn/bn_mod.c:213:10: Call
  211.               goto err;
  212.       }
  213.       if (!BN_nnmod(r, t, m, ctx))
                  ^
  214.           goto err;
  215.       bn_check_top(r);

crypto/bn/bn_mod.c:13:1: Parameter `r->top`
    11.   #include "bn_lcl.h"
    12.   
    13. > int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx)
    14.   {
    15.       /*

crypto/bn/bn_mod.c:20:11: Call
    18.        */
    19.   
    20.       if (!(BN_mod(r, m, d, ctx)))
                    ^
    21.           return 0;
    22.       if (!r->neg)

crypto/bn/bn_div.c:137:1: Parameter `rm->top`
      135.    * If 'dv' or 'rm' is NULL, the respective value is not returned.
      136.    */
      137. > int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
      138.              BN_CTX *ctx)
      139.   {

crypto/bn/bn_div.c:404:9: Call
      402.            */
      403.           int neg = num->neg;
      404.           BN_rshift(rm, snum, norm_shift);
                     ^
      405.           if (!BN_is_zero(rm))
      406.               rm->neg = neg;

crypto/bn/bn_shift.c:122:1: Parameter `r->top`
        120.   }
        121.   
        122. > int BN_rshift(BIGNUM *r, const BIGNUM *a, int n)
        123.   {
        124.       int i, j, nw, lb, rb;

crypto/bn/bn_shift.c:140:9: Call
        138.       lb = BN_BITS2 - rb;
        139.       if (nw >= a->top || a->top == 0) {
        140.           BN_zero(r);
                       ^
        141.           return 1;
        142.       }

crypto/bn/bn_lib.c:359:1: Parameter `a->top`
          357.   }
          358.   
          359. > int BN_set_word(BIGNUM *a, BN_ULONG w)
          360.   {
          361.       bn_check_top(a);

crypto/bn/bn_lib.c:362:9: Call
          360.   {
          361.       bn_check_top(a);
          362.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                         ^
          363.           return 0;
          364.       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:245:1: Parameter `b->top`
              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 `words`
                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:224:13: Call
                222.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
                223.       else
                224.           a = OPENSSL_zalloc(words * sizeof(*a));
                                   ^
                225.       if (a == NULL) {
                226.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/mem.c:228:1: Parameter `num`
                  226.   }
                  227.   
                  228. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
                  229.   {
                  230.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:230:17: Call
                  228.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
                  229.   {
                  230.       void *ret = CRYPTO_malloc(num, file, line);
                                         ^
                  231.   
                  232.       FAILTEST();

crypto/mem.c:201:9: Assignment
                    199.   
                    200.       if (num == 0)
                    201.           return NULL;
                                   ^
                    202.   
                    203.       FAILTEST();

crypto/mem.c:230:5: Assignment
                  228.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
                  229.   {
                  230.       void *ret = CRYPTO_malloc(num, file, line);
                             ^
                  231.   
                  232.       FAILTEST();

crypto/mem.c:235:5: Assignment
                  233.       if (ret != NULL)
                  234.           memset(ret, 0, num);
                  235.       return ret;
                             ^
                  236.   }
                  237.   

crypto/bn/bn_lib.c:224:9: Assignment
                222.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
                223.       else
                224.           a = OPENSSL_zalloc(words * sizeof(*a));
                               ^
                225.       if (a == NULL) {
                226.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/bn/bn_lib.c:232:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_mod_mul` 
                230.       assert(b->top <= words);
                231.       if (b->top > 0)
                232.           memcpy(a, b->d, sizeof(*a) * b->top);
                               ^
                233.   
                234.       return a;
