ssl/statem/statem_srvr.c:848: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [`pkt->written`, `pkt->written` + 4]):unsigned64 by call to `WPACKET_sub_memcpy__`.
Showing all 12 steps of the trace


ssl/statem/statem_srvr.c:847:10: Call
845.   {
846.       /* Always use DTLS 1.0 version: see RFC 6347 */
847.       if (!WPACKET_put_bytes_u16(pkt, DTLS1_VERSION)
                ^
848.               || !WPACKET_sub_memcpy_u8(pkt, cookie, cookie_len))
849.           return 0;

ssl/packet.c:242:1: Parameter `pkt->buf->length`
  240.   }
  241.   
  242. > int WPACKET_put_bytes__(WPACKET *pkt, unsigned int val, size_t size)
  243.   {
  244.       unsigned char *data;

ssl/statem/statem_srvr.c:848:17: Call
846.       /* Always use DTLS 1.0 version: see RFC 6347 */
847.       if (!WPACKET_put_bytes_u16(pkt, DTLS1_VERSION)
848.               || !WPACKET_sub_memcpy_u8(pkt, cookie, cookie_len))
                       ^
849.           return 0;
850.   

ssl/packet.c:298:1: Parameter `pkt->written`
  296.   }
  297.   
  298. > int WPACKET_sub_memcpy__(WPACKET *pkt, const void *src, size_t len,
  299.                            size_t lenbytes)
  300.   {

ssl/packet.c:301:10: Call
  299.                            size_t lenbytes)
  300.   {
  301.       if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)
                  ^
  302.               || !WPACKET_memcpy(pkt, src, len)
  303.               || !WPACKET_close(pkt))

ssl/packet.c:205:1: Parameter `pkt->written`
    203.   }
    204.   
    205. > int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
    206.   {
    207.       WPACKET_SUB *sub;

ssl/packet.c:229:10: Call
    227.       }
    228.   
    229.       if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))
                    ^
    230.           return 0;
    231.       /* Convert to an offset in case the underlying BUF_MEM gets realloc'd */

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 + 4]):unsigned64 by call to `WPACKET_sub_memcpy__` 
      23.           return 0;
      24.   
      25.       if (pkt->buf->length - pkt->written < len) {
                    ^
      26.           size_t newlen;
      27.           size_t reflen;

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;
        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;
    }
    *allocbytes = (unsigned char *)pkt->buf->data + pkt->curr;
    pkt->written += len;
    pkt->curr += len;
    return 1;
}
['int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,\n                                  unsigned char cookie_len)\n{\n    if (!WPACKET_put_bytes_u16(pkt, DTLS1_VERSION)\n            || !WPACKET_sub_memcpy_u8(pkt, cookie, cookie_len))\n        return 0;\n    return 1;\n}', 'int WPACKET_put_bytes__(WPACKET *pkt, unsigned int val, size_t size)\n{\n    unsigned char *data;\n    assert(size <= sizeof(unsigned int));\n    if (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 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_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        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    *allocbytes = (unsigned char *)pkt->buf->data + pkt->curr;\n    pkt->written += len;\n    pkt->curr += len;\n    return 1;\n}']