ssl/statem/statem_srvr.c:3656: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [`pkt->written`, `pkt->written` + 2]):unsigned64 by call to `tls_construct_extensions`.
Showing all 14 steps of the trace


ssl/statem/statem_srvr.c:3654:10: Call
3652.        * (should be s->version)
3653.        */
3654.       if (!WPACKET_put_bytes_u16(pkt, TLS1_3_VERSION_DRAFT)
                 ^
3655.               || !s->method->put_cipher_by_char(s->s3->tmp.new_cipher, pkt, &len)
3656.               || !tls_construct_extensions(s, pkt,

ssl/packet.c:306:1: Parameter `pkt->buf->length`
  304.   }
  305.   
  306. > int WPACKET_put_bytes__(WPACKET *pkt, unsigned int val, size_t size)
  307.   {
  308.       unsigned char *data;

ssl/statem/statem_srvr.c:3656:17: Call
3654.       if (!WPACKET_put_bytes_u16(pkt, TLS1_3_VERSION_DRAFT)
3655.               || !s->method->put_cipher_by_char(s->s3->tmp.new_cipher, pkt, &len)
3656.               || !tls_construct_extensions(s, pkt,
                        ^
3657.                                            SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST,
3658.                                            NULL, 0, &al)) {

ssl/statem/extensions.c:686:1: Parameter `pkt->written`
  684.    * failure construction stops at the first extension to fail to construct.
  685.    */
  686. > int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,
  687.                                X509 *x, size_t chainidx, int *al)
  688.   {

ssl/statem/extensions.c:699:10: Call
  697.       tmpal = SSL_AD_INTERNAL_ERROR;
  698.   
  699.       if (!WPACKET_start_sub_packet_u16(pkt)
                  ^
  700.                  /*
  701.                   * If extensions are of zero length then we don't even add the

ssl/packet.c:270:1: Parameter `pkt->written`
    268.   }
    269.   
    270. > int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
    271.   {
    272.       WPACKET_SUB *sub;

ssl/packet.c:293:10: Call
    291.       }
    292.   
    293.       if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))
                    ^
    294.           return 0;
    295.       /* Convert to an offset in case the underlying BUF_MEM gets realloc'd */

ssl/packet.c:15:1: Parameter `pkt->written`
      13.   #define DEFAULT_BUF_SIZE    256
      14.   
      15. > int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
      16.   {
      17.       if (!WPACKET_reserve_bytes(pkt, len, allocbytes))

ssl/packet.c:17:10: Call
      15.   int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
      16.   {
      17.       if (!WPACKET_reserve_bytes(pkt, len, allocbytes))
                     ^
      18.           return 0;
      19.   

ssl/packet.c:39:1: <LHS trace>
37.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
38.   
39. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
40.   {
41.       /* Internal API, so should not fail */

ssl/packet.c:39:1: Parameter `pkt->buf->length`
        37.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
        38.   
        39. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
        40.   {
        41.       /* Internal API, so should not fail */

ssl/packet.c:39:1: <RHS trace>
37.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
38.   
39. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
40.   {
41.       /* Internal API, so should not fail */

ssl/packet.c:39:1: Parameter `len`
        37.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
        38.   
        39. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
        40.   {
        41.       /* Internal API, so should not fail */

ssl/packet.c:48:36: Binary operation: ([0, +oo] - [pkt->written, pkt->written + 2]):unsigned64 by call to `tls_construct_extensions` 
        46.           return 0;
        47.   
        48.       if (pkt->staticbuf == NULL && (pkt->buf->length - pkt->written < len)) {
                                                 ^
        49.           size_t newlen;
        50.           size_t reflen;

int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
{
    if (!ossl_assert(pkt->subs != NULL && len != 0))
        return 0;
    if (pkt->maxsize - pkt->written < len)
        return 0;
    if (pkt->staticbuf == NULL && (pkt->buf->length - pkt->written < len)) {
        size_t newlen;
        size_t reflen;
        reflen = (len > pkt->buf->length) ? len : pkt->buf->length;
        if (reflen > SIZE_MAX / 2) {
            newlen = SIZE_MAX;
        } else {
            newlen = reflen * 2;
            if (newlen < DEFAULT_BUF_SIZE)
                newlen = DEFAULT_BUF_SIZE;
        }
        if (BUF_MEM_grow(pkt->buf, newlen) == 0)
            return 0;
    }
    if (allocbytes != NULL)
        *allocbytes = WPACKET_get_curr(pkt);
    return 1;
}
['static int tls_construct_hello_retry_request(SSL *s, WPACKET *pkt)\n{\n    int al = SSL_AD_INTERNAL_ERROR;\n    size_t len = 0;\n    if (!WPACKET_put_bytes_u16(pkt, TLS1_3_VERSION_DRAFT)\n            || !s->method->put_cipher_by_char(s->s3->tmp.new_cipher, pkt, &len)\n            || !tls_construct_extensions(s, pkt,\n                                         SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST,\n                                         NULL, 0, &al)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_HELLO_RETRY_REQUEST, ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    SSL_SESSION_free(s->session);\n    s->session = NULL;\n    s->hit = 0;\n    if (!create_synthetic_message_hash(s))\n        goto err;\n    return 1;\n err:\n    ssl3_send_alert(s, SSL3_AL_FATAL, al);\n    return 0;\n}', 'int WPACKET_put_bytes__(WPACKET *pkt, unsigned int val, size_t size)\n{\n    unsigned char *data;\n    if (!ossl_assert(size <= sizeof(unsigned int))\n            || !WPACKET_allocate_bytes(pkt, size, &data)\n            || !put_value(data, val, size))\n        return 0;\n    return 1;\n}', 'int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,\n                             X509 *x, size_t chainidx, int *al)\n{\n    size_t i;\n    int min_version, max_version = 0, reason, tmpal;\n    const EXTENSION_DEFINITION *thisexd;\n    tmpal = SSL_AD_INTERNAL_ERROR;\n    if (!WPACKET_start_sub_packet_u16(pkt)\n            || ((context &\n                 (SSL_EXT_CLIENT_HELLO | SSL_EXT_TLS1_2_SERVER_HELLO)) != 0\n                && s->version == SSL3_VERSION\n                && !WPACKET_set_flags(pkt,\n                                     WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH))) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS, ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    if ((context & SSL_EXT_CLIENT_HELLO) != 0) {\n        reason = ssl_get_min_max_version(s, &min_version, &max_version);\n        if (reason != 0) {\n            SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS, reason);\n            goto err;\n        }\n    }\n    if ((context & SSL_EXT_CLIENT_HELLO) != 0) {\n        custom_ext_init(&s->cert->custext);\n    }\n    if (!custom_ext_add(s, context, pkt, x, chainidx, max_version, &tmpal)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS, ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    for (i = 0, thisexd = ext_defs; i < OSSL_NELEM(ext_defs); i++, thisexd++) {\n        EXT_RETURN (*construct)(SSL *s, WPACKET *pkt, unsigned int context,\n                                X509 *x, size_t chainidx, int *al);\n        EXT_RETURN ret;\n        if (!should_add_extension(s, thisexd->context, context, max_version))\n            continue;\n        construct = s->server ? thisexd->construct_stoc\n                              : thisexd->construct_ctos;\n        if (construct == NULL)\n            continue;\n        ret = construct(s, pkt, context, x, chainidx, &tmpal);\n        if (ret == EXT_RETURN_FAIL)\n            goto err;\n        if (ret == EXT_RETURN_SENT\n                && (context & (SSL_EXT_CLIENT_HELLO\n                               | SSL_EXT_TLS1_3_CERTIFICATE_REQUEST\n                               | SSL_EXT_TLS1_3_NEW_SESSION_TICKET)) != 0)\n            s->ext.extflags[i] |= SSL_EXT_FLAG_SENT;\n    }\n    if (!WPACKET_close(pkt)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS, ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    return 1;\n err:\n    *al = tmpal;\n    return 0;\n}', 'int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)\n{\n    WPACKET_SUB *sub;\n    unsigned char *lenchars;\n    if (!ossl_assert(pkt->subs != NULL))\n        return 0;\n    sub = OPENSSL_zalloc(sizeof(*sub));\n    if (sub == NULL)\n        return 0;\n    sub->parent = pkt->subs;\n    pkt->subs = sub;\n    sub->pwritten = pkt->written + lenbytes;\n    sub->lenbytes = lenbytes;\n    if (lenbytes == 0) {\n        sub->packet_len = 0;\n        return 1;\n    }\n    if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))\n        return 0;\n    sub->packet_len = lenchars - GETBUF(pkt);\n    return 1;\n}', 'int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)\n{\n    if (!WPACKET_reserve_bytes(pkt, len, allocbytes))\n        return 0;\n    pkt->written += len;\n    pkt->curr += len;\n    return 1;\n}', 'int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)\n{\n    if (!ossl_assert(pkt->subs != NULL && len != 0))\n        return 0;\n    if (pkt->maxsize - pkt->written < len)\n        return 0;\n    if (pkt->staticbuf == NULL && (pkt->buf->length - pkt->written < len)) {\n        size_t newlen;\n        size_t reflen;\n        reflen = (len > pkt->buf->length) ? len : pkt->buf->length;\n        if (reflen > SIZE_MAX / 2) {\n            newlen = SIZE_MAX;\n        } else {\n            newlen = reflen * 2;\n            if (newlen < DEFAULT_BUF_SIZE)\n                newlen = DEFAULT_BUF_SIZE;\n        }\n        if (BUF_MEM_grow(pkt->buf, newlen) == 0)\n            return 0;\n    }\n    if (allocbytes != NULL)\n        *allocbytes = WPACKET_get_curr(pkt);\n    return 1;\n}']