ssl/statem/statem_clnt.c:2307: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [`pkt->written`, `pkt->written` + 1]):unsigned64 by call to `WPACKET_sub_memcpy__`.
Showing all 12 steps of the trace


ssl/statem/statem_clnt.c:2278:1: Parameter `pkt->written`
2276.   }
2277.   
2278. > static int tls_construct_cke_ecdhe(SSL *s, WPACKET *pkt, int *al)
2279.   {
2280.   #ifndef OPENSSL_NO_EC

ssl/statem/statem_clnt.c:2307:10: Call
2305.       }
2306.   
2307.       if (!WPACKET_sub_memcpy_u8(pkt, encodedPoint, encoded_pt_len)) {
                 ^
2308.           SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_INTERNAL_ERROR);
2309.           goto err;

ssl/packet.c:296:10: Call
  294.                            size_t lenbytes)
  295.   {
  296.       if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)
                  ^
  297.               || !WPACKET_memcpy(pkt, src, len)
  298.               || !WPACKET_close(pkt))

ssl/packet.c:201:1: Parameter `pkt->buf->length`
    199.   }
    200.   
    201. > int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
    202.   {
    203.       WPACKET_SUB *sub;

ssl/packet.c:297:17: Call
  295.   {
  296.       if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)
  297.               || !WPACKET_memcpy(pkt, src, len)
                         ^
  298.               || !WPACKET_close(pkt))
  299.           return 0;

ssl/packet.c:278:1: Parameter `pkt->written`
    276.   }
    277.   
    278. > int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)
    279.   {
    280.       unsigned char *dest;

ssl/packet.c:285:10: Call
    283.           return 1;
    284.   
    285.       if (!WPACKET_allocate_bytes(pkt, len, &dest))
                    ^
    286.           return 0;
    287.   

ssl/packet.c:15:1: <LHS trace>
13.   #define DEFAULT_BUF_SIZE    256
14.   
15. > int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
16.   {
17.       /* Internal API, so should not fail */

ssl/packet.c:15:1: Parameter `pkt->buf->length`
      13.   #define DEFAULT_BUF_SIZE    256
      14.   
      15. > int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
      16.   {
      17.       /* Internal API, so should not fail */

ssl/packet.c:15:1: <RHS trace>
13.   #define DEFAULT_BUF_SIZE    256
14.   
15. > int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
16.   {
17.       /* Internal API, so should not fail */

ssl/packet.c:15:1: Parameter `len`
      13.   #define DEFAULT_BUF_SIZE    256
      14.   
      15. > int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
      16.   {
      17.       /* Internal API, so should not fail */

ssl/packet.c:25:9: Binary operation: ([0, +oo] - [pkt->written, pkt->written + 1]):unsigned64 by call to `WPACKET_sub_memcpy__` 
      23.           return 0;
      24.   
      25.       if (pkt->buf->length - pkt->written < len) {
                    ^
      26.           size_t newlen;
      27.   

int WPACKET_allocate_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->buf->length - pkt->written < len) {
        size_t newlen;
        if (pkt->buf->length > SIZE_MAX / 2) {
            newlen = SIZE_MAX;
        } else {
            newlen = (pkt->buf->length == 0) ? DEFAULT_BUF_SIZE
                                             : pkt->buf->length * 2;
        }
        if (BUF_MEM_grow(pkt->buf, newlen) == 0)
            return 0;
    }
    *allocbytes = (unsigned char *)pkt->buf->data + pkt->curr;
    pkt->written += len;
    pkt->curr += len;
    return 1;
}
['static int tls_construct_cke_ecdhe(SSL *s, WPACKET *pkt, int *al)\n{\n#ifndef OPENSSL_NO_EC\n    unsigned char *encodedPoint = NULL;\n    int encoded_pt_len = 0;\n    EVP_PKEY *ckey = NULL, *skey = NULL;\n    int ret = 0;\n    skey = s->s3->peer_tmp;\n    if (skey == NULL) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_INTERNAL_ERROR);\n        return 0;\n    }\n    ckey = ssl_generate_pkey(skey);\n    if (ssl_derive(s, ckey, skey) == 0) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_EVP_LIB);\n        goto err;\n    }\n    encoded_pt_len = EVP_PKEY_get1_tls_encodedpoint(ckey, &encodedPoint);\n    if (encoded_pt_len == 0) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_EC_LIB);\n        goto err;\n    }\n    if (!WPACKET_sub_memcpy_u8(pkt, encodedPoint, encoded_pt_len)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    ret = 1;\n err:\n    OPENSSL_free(encodedPoint);\n    EVP_PKEY_free(ckey);\n    return ret;\n#else\n    SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_INTERNAL_ERROR);\n    *al = SSL_AD_INTERNAL_ERROR;\n    return 0;\n#endif\n}', 'int WPACKET_sub_memcpy__(WPACKET *pkt, const void *src, size_t len,\n                         size_t lenbytes)\n{\n    if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)\n            || !WPACKET_memcpy(pkt, src, len)\n            || !WPACKET_close(pkt))\n        return 0;\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 - (unsigned char *)pkt->buf->data;\n    return 1;\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 WPACKET_allocate_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->buf->length - pkt->written < len) {\n        size_t newlen;\n        if (pkt->buf->length > SIZE_MAX / 2) {\n            newlen = SIZE_MAX;\n        } else {\n            newlen = (pkt->buf->length == 0) ? DEFAULT_BUF_SIZE\n                                             : pkt->buf->length * 2;\n        }\n        if (BUF_MEM_grow(pkt->buf, newlen) == 0)\n            return 0;\n    }\n    *allocbytes = (unsigned char *)pkt->buf->data + pkt->curr;\n    pkt->written += len;\n    pkt->curr += len;\n    return 1;\n}']