crypto/ec/ecdh_ossl.c:69: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `EC_GROUP_get_cofactor`.
Showing all 25 steps of the trace


crypto/ec/ecdh_ossl.c:53:9: Call
51.           goto err;
52.       BN_CTX_start(ctx);
53.       x = BN_CTX_get(ctx);
              ^
54.       y = BN_CTX_get(ctx);
55.       if (y == NULL) {

crypto/bn/bn_ctx.c:229:5: Call
  227.       }
  228.       /* OK, make sure the returned bignum is "zero" */
  229.       BN_zero(ret);
             ^
  230.       ctx->used++;
  231.       CTXDBG_RET(ctx, ret);

crypto/bn/bn_lib.c:405:15: Assignment
    403.       a->neg = 0;
    404.       a->d[0] = w;
    405.       a->top = (w ? 1 : 0);
                         ^
    406.       bn_check_top(a);
    407.       return 1;

crypto/bn/bn_lib.c:405:5: Assignment
    403.       a->neg = 0;
    404.       a->d[0] = w;
    405.       a->top = (w ? 1 : 0);
               ^
    406.       bn_check_top(a);
    407.       return 1;

crypto/ec/ecdh_ossl.c:69:14: Call
67.   
68.       if (EC_KEY_get_flags(ecdh) & EC_FLAG_COFACTOR_ECDH) {
69.           if (!EC_GROUP_get_cofactor(group, x, NULL) ||
                   ^
70.               !BN_mul(x, x, priv_key, ctx)) {
71.               ECerr(EC_F_ECDH_SIMPLE_COMPUTE_KEY, ERR_R_MALLOC_FAILURE);

crypto/ec/ec_lib.c:336:1: Parameter `cofactor->top`
  334.   }
  335.   
  336. > int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
  337.                             BN_CTX *ctx)
  338.   {

crypto/ec/ec_lib.c:342:10: Call
  340.       if (group->cofactor == NULL)
  341.           return 0;
  342.       if (!BN_copy(cofactor, group->cofactor))
                  ^
  343.           return 0;
  344.   

crypto/bn/bn_lib.c:323:1: Parameter `a->top`
    321.   }
    322.   
    323. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
    324.   {
    325.       bn_check_top(b);

crypto/bn/bn_lib.c:329:9: Call
    327.       if (a == b)
    328.           return a;
    329.       if (bn_wexpand(a, b->top) == NULL)
                   ^
    330.           return NULL;
    331.   

crypto/bn/bn_lib.c:951:1: Parameter `a->top`
      949.   }
      950.   
      951. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
      952.   {
      953.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:953:37: Call
      951.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
      952.   {
      953.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                                 ^
      954.   }
      955.   

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:198:1: Parameter `num`
            196.   }
            197.   
            198. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
            199.   {
            200.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:200:17: Call
            198.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
            199.   {
            200.       void *ret = CRYPTO_malloc(num, file, line);
                                   ^
            201.   
            202.       FAILTEST();

crypto/mem.c:178:9: Assignment
              176.   
              177.       if (num == 0)
              178.           return NULL;
                             ^
              179.   
              180.       FAILTEST();

crypto/mem.c:200:5: Assignment
            198.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
            199.   {
            200.       void *ret = CRYPTO_malloc(num, file, line);
                       ^
            201.   
            202.       FAILTEST();

crypto/mem.c:205:5: Assignment
            203.       if (ret != NULL)
            204.           memset(ret, 0, num);
            205.       return ret;
                       ^
            206.   }
            207.   

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