crypto/bn/bn_exp.c:1345: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_mod_mul`.
Showing all 31 steps of the trace


crypto/bn/bn_exp.c:1345:22: Call
1343.           if (BN_is_bit_set(p, wstart) == 0) {
1344.               if (!start)
1345.                   if (!BN_mod_mul(r, r, r, m, ctx))
                             ^
1346.                       goto err;
1347.               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:1345:22: Call
1343.           if (BN_is_bit_set(p, wstart) == 0) {
1344.               if (!start)
1345.                   if (!BN_mod_mul(r, r, r, m, ctx))
                             ^
1346.                       goto err;
1347.               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:209:1: Parameter `rm->top`
      207.    * If 'dv' or 'rm' is NULL, the respective value is not returned.
      208.    */
      209. > int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
      210.              BN_CTX *ctx)
      211.   {

crypto/bn/bn_div.c:229:11: Call
      227.       }
      228.   
      229.       ret = bn_div_fixed_top(dv, rm, num, divisor, ctx);
                       ^
      230.   
      231.       if (ret) {

crypto/bn/bn_div.c:264:1: Parameter `rm->top`
        262.    *       divisor's length is considered public;
        263.    */
        264. > int bn_div_fixed_top(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num,
        265.                        const BIGNUM *divisor, BN_CTX *ctx)
        266.   {

crypto/bn/bn_div.c:449:9: Call
        447.       snum->flags |= BN_FLG_FIXED_TOP;
        448.       if (rm != NULL)
        449.           bn_rshift_fixed_top(rm, snum, norm_shift);
                       ^
        450.       BN_CTX_end(ctx);
        451.       return 1;

crypto/bn/bn_shift.c:214:1: Parameter `r->top`
          212.    * |n < BN_BITS2| or |n / BN_BITS2| being non-secret.
          213.    */
          214. > int bn_rshift_fixed_top(BIGNUM *r, const BIGNUM *a, int n)
          215.   {
          216.       int i, top, nw;

crypto/bn/bn_shift.c:229:9: Call
          227.       if (nw >= a->top) {
          228.           /* shouldn't happen, but formally required */
          229.           BN_zero(r);
                         ^
          230.           return 1;
          231.       }

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;
