test/ectest.c:1029: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_hex2bn`.
Showing all 21 steps of the trace


test/ectest.c:1029:13: Call
1027.           || !TEST_ptr(a = BN_new())
1028.           || !TEST_ptr(b = BN_new())
1029.           || !TEST_true(BN_hex2bn(&p, "13"))
                    ^
1030.           || !TEST_true(BN_hex2bn(&a, "3"))
1031.           || !TEST_true(BN_hex2bn(&b, "1")))

crypto/bn/bn_print.c:126:1: Parameter `(*bn)->top`
  124.   }
  125.   
  126. > int BN_hex2bn(BIGNUM **bn, const char *a)
  127.   {
  128.       BIGNUM *ret = NULL;

crypto/bn/bn_print.c:157:9: Call
  155.       } else {
  156.           ret = *bn;
  157.           BN_zero(ret);
                 ^
  158.       }
  159.   

crypto/bn/bn_lib.c:395:1: Parameter `a->top`
    393.   }
    394.   
    395. > int BN_set_word(BIGNUM *a, BN_ULONG w)
    396.   {
    397.       bn_check_top(a);

crypto/bn/bn_lib.c:398:9: Call
    396.   {
    397.       bn_check_top(a);
    398.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                   ^
    399.           return (0);
    400.       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: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:186:1: Parameter `num`
            184.   }
            185.   
            186. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
            187.   {
            188.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:188:17: Call
            186.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
            187.   {
            188.       void *ret = CRYPTO_malloc(num, file, line);
                                   ^
            189.   
            190.       FAILTEST();

crypto/mem.c:166:9: Assignment
              164.   
              165.       if (num == 0)
              166.           return NULL;
                             ^
              167.   
              168.       FAILTEST();

crypto/mem.c:188:5: Assignment
            186.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
            187.   {
            188.       void *ret = CRYPTO_malloc(num, file, line);
                       ^
            189.   
            190.       FAILTEST();

crypto/mem.c:193:5: Assignment
            191.       if (ret != NULL)
            192.           memset(ret, 0, num);
            193.       return ret;
                       ^
            194.   }
            195.   

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 `BN_hex2bn` 
          269.       assert(b->top <= words);
          270.       if (b->top > 0)
          271.           memcpy(a, b->d, sizeof(*a) * b->top);
                         ^
          272.   
          273.       return a;

static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
{
    BN_ULONG *a = NULL;
    bn_check_top(b);
    if (words > (INT_MAX / (4 * BN_BITS2))) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);
        return NULL;
    }
    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);
        return (NULL);
    }
    if (BN_get_flags(b, BN_FLG_SECURE))
        a = OPENSSL_secure_zalloc(words * sizeof(*a));
    else
        a = OPENSSL_zalloc(words * sizeof(*a));
    if (a == NULL) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);
        return (NULL);
    }
    assert(b->top <= words);
    if (b->top > 0)
        memcpy(a, b->d, sizeof(*a) * b->top);
    return a;
}
['static int char2_field_tests(void)\n{\n    BN_CTX *ctx = NULL;\n    BIGNUM *p = NULL, *a = NULL, *b = NULL;\n    EC_GROUP *group = NULL, *tmp = NULL;\n    EC_POINT *P = NULL, *Q = NULL, *R = NULL;\n    BIGNUM *x = NULL, *y = NULL, *z = NULL, *cof = NULL, *yplusone = NULL;\n    unsigned char buf[100];\n    size_t i, len;\n    int k, r = 0;\n    if (!TEST_ptr(ctx = BN_CTX_new())\n        || !TEST_ptr(p = BN_new())\n        || !TEST_ptr(a = BN_new())\n        || !TEST_ptr(b = BN_new())\n        || !TEST_true(BN_hex2bn(&p, "13"))\n        || !TEST_true(BN_hex2bn(&a, "3"))\n        || !TEST_true(BN_hex2bn(&b, "1")))\n        goto err;\n    group = EC_GROUP_new(EC_GF2m_simple_method());\n    if (!TEST_ptr(group)\n        || !TEST_true(EC_GROUP_set_curve_GF2m(group, p, a, b, ctx))\n        || !TEST_ptr(tmp = EC_GROUP_new(EC_GROUP_method_of(group)))\n        || !TEST_true(EC_GROUP_copy(tmp, group)))\n        goto err;\n    EC_GROUP_free(group);\n    group = tmp;\n    tmp = NULL;\n    if (!TEST_true(EC_GROUP_get_curve_GF2m(group, p, a, b, ctx)))\n        goto err;\n    BIO_printf(bio_out,\n            "Curve defined by Weierstrass equation\\n"\n            "     y^2 + x*y = x^3 + a*x^2 + b  (mod 0x");\n    BN_print(bio_out, p);\n    BIO_printf(bio_out, ")\\n     a = 0x");\n    BN_print(bio_out, a);\n    BIO_printf(bio_out, "\\n     b = 0x");\n    BN_print(bio_out, b);\n    BIO_printf(bio_out, "\\n(0x... means binary polynomial)\\n");\n     if (!TEST_ptr(P = EC_POINT_new(group))\n        || !TEST_ptr(Q = EC_POINT_new(group))\n        || !TEST_ptr(R = EC_POINT_new(group))\n        || !TEST_true(EC_POINT_set_to_infinity(group, P))\n        || !TEST_true(EC_POINT_is_at_infinity(group, P)))\n        goto err;\n    buf[0] = 0;\n    if (!TEST_true(EC_POINT_oct2point(group, Q, buf, 1, ctx))\n        || !TEST_true(EC_POINT_add(group, P, P, Q, ctx))\n        || !TEST_true(EC_POINT_is_at_infinity(group, P))\n        || !TEST_ptr(x = BN_new())\n        || !TEST_ptr(y = BN_new())\n        || !TEST_ptr(z = BN_new())\n        || !TEST_ptr(cof = BN_new())\n        || !TEST_ptr(yplusone = BN_new())\n        || !TEST_true(BN_hex2bn(&x, "6"))\n#  ifdef OPENSSL_EC_BIN_PT_COMP\n        || !TEST_true(EC_POINT_set_compressed_coordinates_GF2m(group, Q, x, 1,\n                                                               ctx))\n#  else\n        || !TEST_true(BN_hex2bn(&y, "8"))\n        || !TEST_true(EC_POINT_set_affine_coordinates_GF2m(group, Q, x, y, ctx))\n#  endif\n       )\n        goto err;\n    if (!TEST_int_gt(EC_POINT_is_on_curve(group, Q, ctx), 0)) {\n#  ifdef OPENSSL_EC_BIN_PT_COMP\n        if (!TEST_true(EC_POINT_get_affine_coordinates_GF2m(group, Q, x, y,\n                                                            ctx)))\n            goto err;\n#  endif\n        BIO_printf(bio_err, "Point is not on curve: x = 0x");\n        BN_print_fp(stderr, x);\n        BIO_printf(bio_err, ", y = 0x");\n        BN_print_fp(stderr, y);\n        BIO_printf(bio_err, "\\n");\n        goto err;\n    }\n    BIO_printf(bio_out, "A cyclic subgroup:\\n");\n    k = 100;\n    do {\n        if (!TEST_int_ne(k--, 0))\n            goto err;\n        if (EC_POINT_is_at_infinity(group, P))\n            BIO_printf(bio_out, "     point at infinity\\n");\n        else {\n            if (!TEST_true(EC_POINT_get_affine_coordinates_GF2m(group, P, x, y,\n                                                                ctx)))\n                goto err;\n            BIO_printf(bio_out, "     x = 0x");\n            BN_print(bio_out, x);\n            BIO_printf(bio_out, ", y = 0x");\n            BN_print(bio_out, y);\n            BIO_printf(bio_out, "\\n");\n        }\n        if (!TEST_true(EC_POINT_copy(R, P))\n            || !TEST_true(EC_POINT_add(group, P, P, Q, ctx)))\n            goto err;\n    }\n    while (!EC_POINT_is_at_infinity(group, P));\n    if (!TEST_true(EC_POINT_add(group, P, Q, R, ctx))\n        || !TEST_true(EC_POINT_is_at_infinity(group, P)))\n        goto err;\n#  ifdef OPENSSL_EC_BIN_PT_COMP\n    len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_COMPRESSED,\n                             buf, sizeof buf, ctx);\n    if (!TEST_size_t_ne(len, 0)\n        || !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))\n        || !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))\n        goto err;\n    BIO_printf(bio_out, "Generator as octet string, compressed form:\\n     ");\n    for (i = 0; i < len; i++)\n        BIO_printf(bio_out, "%02X", buf[i]);\n#  endif\n    len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_UNCOMPRESSED,\n                             buf, sizeof buf, ctx);\n    if (!TEST_size_t_ne(len, 0)\n        || !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))\n        || !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))\n        goto err;\n    BIO_printf(bio_out, "\\nGenerator as octet string, uncompressed form:\\n"\n                        "     ");\n    for (i = 0; i < len; i++)\n        BIO_printf(bio_out, "%02X", buf[i]);\n#  ifdef OPENSSL_EC_BIN_PT_COMP\n    len =\n        EC_POINT_point2oct(group, Q, POINT_CONVERSION_HYBRID, buf, sizeof buf,\n                           ctx);\n    if (!TEST_size_t_ne(len, 0)\n        || !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))\n        || !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))\n        goto err;\n    BIO_printf(bio_out, "\\nGenerator as octet string, hybrid form:\\n     ");\n    for (i = 0; i < len; i++)\n        BIO_printf(bio_out, "%02X", buf[i]);\n#  endif\n    BIO_printf(bio_out, "\\n");\n    if (!TEST_true(EC_POINT_invert(group, P, ctx))\n        || !TEST_int_eq(0, EC_POINT_cmp(group, P, R, ctx)))\n        goto err;\n#if 0\n#endif\n    BIO_printf(bio_out, "\\n\\n");\n    r = 1;\nerr:\n    BN_CTX_free(ctx);\n    BN_free(p);\n    BN_free(a);\n    BN_free(b);\n    EC_GROUP_free(group);\n    EC_GROUP_free(tmp);\n    EC_POINT_free(P);\n    EC_POINT_free(Q);\n    EC_POINT_free(R);\n    BN_free(x);\n    BN_free(y);\n    BN_free(z);\n    BN_free(cof);\n    BN_free(yplusone);\n    return r;\n}', "int BN_hex2bn(BIGNUM **bn, const char *a)\n{\n    BIGNUM *ret = NULL;\n    BN_ULONG l = 0;\n    int neg = 0, h, m, i, j, k, c;\n    int num;\n    if ((a == NULL) || (*a == '\\0'))\n        return (0);\n    if (*a == '-') {\n        neg = 1;\n        a++;\n    }\n    for (i = 0; i <= (INT_MAX/4) && isxdigit((unsigned char)a[i]); i++)\n        continue;\n    if (i == 0 || i > INT_MAX/4)\n        goto err;\n    num = i + neg;\n    if (bn == NULL)\n        return (num);\n    if (*bn == NULL) {\n        if ((ret = BN_new()) == NULL)\n            return (0);\n    } else {\n        ret = *bn;\n        BN_zero(ret);\n    }\n    if (bn_expand(ret, i * 4) == NULL)\n        goto err;\n    j = i;\n    m = 0;\n    h = 0;\n    while (j > 0) {\n        m = ((BN_BYTES * 2) <= j) ? (BN_BYTES * 2) : j;\n        l = 0;\n        for (;;) {\n            c = a[j - m];\n            k = OPENSSL_hexchar2int(c);\n            if (k < 0)\n                k = 0;\n            l = (l << 4) | k;\n            if (--m <= 0) {\n                ret->d[h++] = l;\n                break;\n            }\n        }\n        j -= (BN_BYTES * 2);\n    }\n    ret->top = h;\n    bn_correct_top(ret);\n    *bn = ret;\n    bn_check_top(ret);\n    if (ret->top != 0)\n        ret->neg = neg;\n    return (num);\n err:\n    if (*bn == NULL)\n        BN_free(ret);\n    return (0);\n}", 'int BN_set_word(BIGNUM *a, BN_ULONG w)\n{\n    bn_check_top(a);\n    if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)\n        return (0);\n    a->neg = 0;\n    a->d[0] = w;\n    a->top = (w ? 1 : 0);\n    bn_check_top(a);\n    return (1);\n}', 'static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)\n{\n    if (bits > (INT_MAX - BN_BITS2 + 1))\n        return NULL;\n    if (((bits+BN_BITS2-1)/BN_BITS2) <= (a)->dmax)\n        return a;\n    return bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2);\n}', 'BIGNUM *bn_expand2(BIGNUM *b, int words)\n{\n    bn_check_top(b);\n    if (words > b->dmax) {\n        BN_ULONG *a = bn_expand_internal(b, words);\n        if (!a)\n            return NULL;\n        if (b->d) {\n            OPENSSL_cleanse(b->d, b->dmax * sizeof(b->d[0]));\n            bn_free_d(b);\n        }\n        b->d = a;\n        b->dmax = words;\n    }\n    bn_check_top(b);\n    return b;\n}', 'static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)\n{\n    BN_ULONG *a = NULL;\n    bn_check_top(b);\n    if (words > (INT_MAX / (4 * BN_BITS2))) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);\n        return NULL;\n    }\n    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);\n        return (NULL);\n    }\n    if (BN_get_flags(b, BN_FLG_SECURE))\n        a = OPENSSL_secure_zalloc(words * sizeof(*a));\n    else\n        a = OPENSSL_zalloc(words * sizeof(*a));\n    if (a == NULL) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);\n        return (NULL);\n    }\n    assert(b->top <= words);\n    if (b->top > 0)\n        memcpy(a, b->d, sizeof(*a) * b->top);\n    return a;\n}', 'void *CRYPTO_zalloc(size_t num, const char *file, int line)\n{\n    void *ret = CRYPTO_malloc(num, file, line);\n    FAILTEST();\n    if (ret != NULL)\n        memset(ret, 0, num);\n    return ret;\n}', 'void *CRYPTO_malloc(size_t num, const char *file, int line)\n{\n    void *ret = NULL;\n    if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)\n        return malloc_impl(num, file, line);\n    if (num == 0)\n        return NULL;\n    FAILTEST();\n    allow_customize = 0;\n#ifndef OPENSSL_NO_CRYPTO_MDEBUG\n    if (call_malloc_debug) {\n        CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);\n        ret = malloc(num);\n        CRYPTO_mem_debug_malloc(ret, num, 1, file, line);\n    } else {\n        ret = malloc(num);\n    }\n#else\n    osslargused(file); osslargused(line);\n    ret = malloc(num);\n#endif\n    return ret;\n}']