ssl/statem/extensions_srvr.c:802: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [`pkt->written`, `pkt->written` + 6]):unsigned64 by call to `WPACKET_sub_memcpy__`.
Showing all 16 steps of the trace


ssl/statem/extensions_srvr.c:786:1: Parameter `pkt->written`
784.   
785.   #ifndef OPENSSL_NO_NEXTPROTONEG
786. > int tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt, X509 *x,
787.                                         size_t chainidx, int *al)
788.   {

ssl/statem/extensions_srvr.c:801:14: Call
799.                                           s->ctx->ext.npn_advertised_cb_arg);
800.       if (ret == SSL_TLSEXT_ERR_OK) {
801.           if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_next_proto_neg)
                    ^
802.                   || !WPACKET_sub_memcpy_u16(pkt, npa, npalen)) {
803.               SSLerr(SSL_F_TLS_CONSTRUCT_STOC_NEXT_PROTO_NEG,

ssl/packet.c:289:1: Parameter `pkt->written`
  287.   }
  288.   
  289. > int WPACKET_put_bytes__(WPACKET *pkt, unsigned int val, size_t size)
  290.   {
  291.       unsigned char *data;

ssl/statem/extensions_srvr.c:802:21: Call
800.       if (ret == SSL_TLSEXT_ERR_OK) {
801.           if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_next_proto_neg)
802.                   || !WPACKET_sub_memcpy_u16(pkt, npa, npalen)) {
                           ^
803.               SSLerr(SSL_F_TLS_CONSTRUCT_STOC_NEXT_PROTO_NEG,
804.                      ERR_R_INTERNAL_ERROR);

ssl/packet.c:348:10: Call
  346.                            size_t lenbytes)
  347.   {
  348.       if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)
                  ^
  349.               || !WPACKET_memcpy(pkt, src, len)
  350.               || !WPACKET_close(pkt))

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

ssl/packet.c:349:17: Call
  347.   {
  348.       if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)
  349.               || !WPACKET_memcpy(pkt, src, len)
                         ^
  350.               || !WPACKET_close(pkt))
  351.           return 0;

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

ssl/packet.c:337:10: Call
    335.           return 1;
    336.   
    337.       if (!WPACKET_allocate_bytes(pkt, len, &dest))
                    ^
    338.           return 0;
    339.   

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] - [pkt->written, pkt->written + 6]):unsigned64 by call to `WPACKET_sub_memcpy__` 
        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_stoc_next_proto_neg(SSL *s, WPACKET *pkt, X509 *x,\n                                      size_t chainidx, int *al)\n{\n    const unsigned char *npa;\n    unsigned int npalen;\n    int ret;\n    int npn_seen = s->s3->npn_seen;\n    s->s3->npn_seen = 0;\n    if (!npn_seen || s->ctx->ext.npn_advertised_cb == NULL)\n        return 1;\n    ret = s->ctx->ext.npn_advertised_cb(s, &npa, &npalen,\n                                        s->ctx->ext.npn_advertised_cb_arg);\n    if (ret == SSL_TLSEXT_ERR_OK) {\n        if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_next_proto_neg)\n                || !WPACKET_sub_memcpy_u16(pkt, npa, npalen)) {\n            SSLerr(SSL_F_TLS_CONSTRUCT_STOC_NEXT_PROTO_NEG,\n                   ERR_R_INTERNAL_ERROR);\n            return 0;\n        }\n        s->s3->npn_seen = 1;\n    }\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 - GETBUF(pkt);\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    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}']