test/bntest.c:1980: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, +oo] by call to `BN_div`.
Showing all 16 steps of the trace


test/bntest.c:1978:5: Call
1976.               || !TEST_ptr(mont = BN_MONT_CTX_new()))
1977.           goto err;
1978.       BN_zero(zero);
            ^
1979.   
1980.       if (!TEST_false(BN_div(a, b, BN_value_one(), zero, ctx)))

crypto/bn/bn_lib.c:358:1: Parameter `*a->d`
  356.   }
  357.   
  358. > int BN_set_word(BIGNUM *a, BN_ULONG w)
  359.   {
  360.       bn_check_top(a);

crypto/bn/bn_lib.c:361:9: Call
  359.   {
  360.       bn_check_top(a);
  361.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                 ^
  362.           return 0;
  363.       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))

test/bntest.c:1980:10: Call
1978.       BN_zero(zero);
1979.   
1980.       if (!TEST_false(BN_div(a, b, BN_value_one(), zero, ctx)))
                 ^
1981.           goto err;
1982.       ERR_clear_error();

crypto/bn/bn_div.c:137:1: Parameter `*dv->d`
  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:252:10: Call
  250.   
  251.       /* Setup to 'res' */
  252.       if (!bn_wexpand(res, (loop + 1)))
                  ^
  253.           goto err;
  254.       res->neg = (num->neg ^ divisor->neg);

crypto/bn/bn_lib.c:942:1: Parameter `*a->d`
    940.   }
    941.   
    942. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
    943.   {
    944.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:944:37: Call
    942.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
    943.   {
    944.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                               ^
    945.   }
    946.   

crypto/bn/bn_lib.c:244:1: Parameter `*b->d`
      242.    */
      243.   
      244. > BIGNUM *bn_expand2(BIGNUM *b, int words)
      245.   {
      246.       if (words > b->dmax) {

crypto/bn/bn_lib.c:247:23: Call
      245.   {
      246.       if (words > b->dmax) {
      247.           BN_ULONG *a = bn_expand_internal(b, words);
                                   ^
      248.           if (!a)
      249.               return NULL;

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

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

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

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

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