crypto/bn/bn_gf2m.c:570: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_GF2m_mod`.
Showing all 20 steps of the trace


crypto/bn/bn_gf2m.c:563:9: Call
561.       BN_CTX_start(ctx);
562.   
563.       b = BN_CTX_get(ctx);
               ^
564.       c = BN_CTX_get(ctx);
565.       u = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:229:5: Call
  227.       }
  228.       /* OK, make sure the returned bignum is "zero" */
  229.       BN_zero(ret);
             ^
  230.       /* clear BN_FLG_CONSTTIME if leaked from previous frames */
  231.       ret->flags &= (~BN_FLG_CONSTTIME);

crypto/bn/bn_lib.c:366:15: Assignment
    364.       a->neg = 0;
    365.       a->d[0] = w;
    366.       a->top = (w ? 1 : 0);
                         ^
    367.       a->flags &= ~BN_FLG_FIXED_TOP;
    368.       bn_check_top(a);

crypto/bn/bn_lib.c:366:5: Assignment
    364.       a->neg = 0;
    365.       a->d[0] = w;
    366.       a->top = (w ? 1 : 0);
               ^
    367.       a->flags &= ~BN_FLG_FIXED_TOP;
    368.       bn_check_top(a);

crypto/bn/bn_gf2m.c:570:10: Call
568.           goto err;
569.   
570.       if (!BN_GF2m_mod(u, a, p))
                ^
571.           goto err;
572.       if (BN_is_zero(u))

crypto/bn/bn_gf2m.c:390:1: Parameter `*r->d`
  388.    * BN_GF2m_mod_arr function.
  389.    */
  390. > int BN_GF2m_mod(BIGNUM *r, const BIGNUM *a, const BIGNUM *p)
  391.   {
  392.       int ret = 0;

crypto/bn/bn_gf2m.c:401:11: Call
  399.           return 0;
  400.       }
  401.       ret = BN_GF2m_mod_arr(r, a, arr);
                   ^
  402.       bn_check_top(r);
  403.       return ret;

crypto/bn/bn_gf2m.c:292:1: Parameter `*r->d`
    290.   
    291.   /* Performs modular reduction of a and store result in r.  r could be a. */
    292. > int BN_GF2m_mod_arr(BIGNUM *r, const BIGNUM *a, const int p[])
    293.   {
    294.       int j, k;

crypto/bn/bn_gf2m.c:302:9: Call
    300.       if (!p[0]) {
    301.           /* reduction mod 1 => return 0 */
    302.           BN_zero(r);
                   ^
    303.           return 1;
    304.       }

crypto/bn/bn_lib.c:359:1: Parameter `*a->d`
      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->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))

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->d`
          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 `*b->d`
            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:232:9: Array access: Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_GF2m_mod` 
            230.       assert(b->top <= words);
            231.       if (b->top > 0)
            232.           memcpy(a, b->d, sizeof(*a) * b->top);
                           ^
            233.   
            234.       return a;
