ssl/statem/statem_srvr.c:1920: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [0, `pkt->written` + 73]):unsigned64 by call to `tls_construct_extensions`.
Showing all 14 steps of the trace


ssl/statem/statem_srvr.c:1869:17: Call
1867.                   * tls_process_client_hello()
1868.                   */
1869.               || !WPACKET_memcpy(pkt, s->s3->server_random, SSL3_RANDOM_SIZE)) {
                        ^
1870.           SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
1871.           goto err;

ssl/packet.c:330:1: Parameter `pkt->buf->length`
  328.   }
  329.   
  330. > int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)
  331.   {
  332.       unsigned char *dest;

ssl/statem/statem_srvr.c:1920:17: Call
1918.                   * we will do this based on the actual protocol
1919.                   */
1920.               || !tls_construct_extensions(s, pkt,
                        ^
1921.                                            EXT_TLS1_2_SERVER_HELLO
1922.                                            | EXT_TLS1_3_SERVER_HELLO

ssl/statem/extensions.c:605:1: Parameter `pkt->written`
  603.   }
  604.   
  605. > int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,
  606.                                int *al)
  607.   {

ssl/statem/extensions.c:618:10: Call
  616.       *al = SSL_AD_INTERNAL_ERROR;
  617.   
  618.       if (!WPACKET_start_sub_packet_u16(pkt)
                  ^
  619.                  /*
  620.                   * If extensions are of zero length then we don't even add the

ssl/packet.c:252:1: Parameter `pkt->written`
    250.   }
    251.   
    252. > int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
    253.   {
    254.       WPACKET_SUB *sub;

ssl/packet.c:276:10: Call
    274.       }
    275.   
    276.       if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))
                    ^
    277.           return 0;
    278.       /* 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:49:36: Binary operation: ([0, +oo] - [0, pkt->written + 73]):unsigned64 by call to `tls_construct_extensions` 
        47.           return 0;
        48.   
        49.       if (pkt->staticbuf == NULL && (pkt->buf->length - pkt->written < len)) {
                                                 ^
        50.           size_t newlen;
        51.           size_t reflen;

int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
{
    assert(pkt->subs != NULL && len != 0);
    if (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;
}
['int tls_construct_server_hello(SSL *s, WPACKET *pkt)\n{\n    int compm, al = SSL_AD_INTERNAL_ERROR;\n    size_t sl, len;\n    int version;\n    version = SSL_IS_TLS13(s) ? TLS1_3_VERSION_DRAFT : s->version;\n    if (!WPACKET_put_bytes_u16(pkt, version)\n            || !WPACKET_memcpy(pkt, s->s3->server_random, SSL3_RANDOM_SIZE)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_HELLO, ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    if (s->session->not_resumable ||\n        (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER)\n         && !s->hit))\n        s->session->session_id_length = 0;\n    sl = s->session->session_id_length;\n    if (sl > sizeof(s->session->session_id)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_HELLO, ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n#ifdef OPENSSL_NO_COMP\n    compm = 0;\n#else\n    if (s->s3->tmp.new_compression == NULL)\n        compm = 0;\n    else\n        compm = s->s3->tmp.new_compression->id;\n#endif\n    if ((!SSL_IS_TLS13(s)\n                && !WPACKET_sub_memcpy_u8(pkt, s->session->session_id, sl))\n            || !s->method->put_cipher_by_char(s->s3->tmp.new_cipher, pkt, &len)\n            || (!SSL_IS_TLS13(s)\n                && !WPACKET_put_bytes_u8(pkt, compm))\n            || !tls_construct_extensions(s, pkt,\n                                         EXT_TLS1_2_SERVER_HELLO\n                                         | EXT_TLS1_3_SERVER_HELLO\n                                         | EXT_TLS1_3_ENCRYPTED_EXTENSIONS\n                                         | EXT_TLS1_3_CERTIFICATE, &al)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_HELLO, ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    return 1;\n err:\n    ssl3_send_alert(s, SSL3_AL_FATAL, al);\n    return 0;\n}', 'int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)\n{\n    unsigned char *dest;\n    if (len == 0)\n        return 1;\n    if (!WPACKET_allocate_bytes(pkt, len, &dest))\n        return 0;\n    memcpy(dest, src, len);\n    return 1;\n}', 'int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,\n                             int *al)\n{\n    size_t loop;\n    int addcustom = 0;\n    int min_version, max_version = 0, reason;\n    *al = SSL_AD_INTERNAL_ERROR;\n    if (!WPACKET_start_sub_packet_u16(pkt)\n            || ((context & (EXT_CLIENT_HELLO | 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        return 0;\n    }\n    if ((context & EXT_CLIENT_HELLO) != 0) {\n        reason = ssl_get_client_min_max_version(s, &min_version, &max_version);\n        if (reason != 0) {\n            SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS, reason);\n            return 0;\n        }\n    }\n    if ((context & EXT_CLIENT_HELLO) != 0) {\n        custom_ext_init(&s->cert->cli_ext);\n        addcustom = 1;\n    } else if ((context & EXT_TLS1_2_SERVER_HELLO) != 0) {\n        addcustom = 1;\n    }\n    if (addcustom && !custom_ext_add(s, s->server, pkt, al)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS, ERR_R_INTERNAL_ERROR);\n        return 0;\n    }\n    for (loop = 0; loop < OSSL_NELEM(ext_defs); loop++) {\n        int (*construct)(SSL *s, WPACKET *pkt, int *al);\n        if ((ext_defs[loop].context & context) == 0)\n            continue;\n        construct = s->server ? ext_defs[loop].construct_server_ext\n                              : ext_defs[loop].construct_client_ext;\n        if ((SSL_IS_DTLS(s)\n                    && (ext_defs[loop].context & EXT_TLS_IMPLEMENTATION_ONLY)\n                       != 0)\n                || (s->version == SSL3_VERSION\n                        && (ext_defs[loop].context & EXT_SSL3_ALLOWED) == 0)\n                || (SSL_IS_TLS13(s)\n                    && (ext_defs[loop].context & EXT_TLS1_2_AND_BELOW_ONLY)\n                       != 0)\n                || (!SSL_IS_TLS13(s)\n                    && (ext_defs[loop].context & EXT_TLS1_3_ONLY) != 0\n                    && (context & EXT_CLIENT_HELLO) == 0)\n                || ((ext_defs[loop].context & EXT_TLS1_3_ONLY) != 0\n                    && (context & EXT_CLIENT_HELLO) != 0\n                    && (SSL_IS_DTLS(s) || max_version < TLS1_3_VERSION))\n                || construct == NULL)\n            continue;\n        if (!construct(s, pkt, al))\n            return 0;\n    }\n    if (!WPACKET_close(pkt)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_EXTENSIONS, ERR_R_INTERNAL_ERROR);\n        return 0;\n    }\n    return 1;\n}', 'int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)\n{\n    WPACKET_SUB *sub;\n    unsigned char *lenchars;\n    assert(pkt->subs != NULL);\n    if (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    assert(pkt->subs != NULL && len != 0);\n    if (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}']