ssl/statem/extensions_clnt.c:239: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [`pkt->written`, `pkt->written` + 6]):unsigned64 by call to `WPACKET_start_sub_packet_len__`.
Showing all 12 steps of the trace


ssl/statem/extensions_clnt.c:237:17: Call
235.       if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_signature_algorithms)
236.                  /* Sub-packet for sig-algs extension */
237.               || !WPACKET_start_sub_packet_u16(pkt)
                       ^
238.                  /* Sub-packet for the actual list */
239.               || !WPACKET_start_sub_packet_u16(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/statem/extensions_clnt.c:239:17: Call
237.               || !WPACKET_start_sub_packet_u16(pkt)
238.                  /* Sub-packet for the actual list */
239.               || !WPACKET_start_sub_packet_u16(pkt)
                       ^
240.               || !tls12_copy_sigalgs(s, pkt, salg, salglen)
241.               || !WPACKET_close(pkt)

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] - [pkt->written, pkt->written + 6]):unsigned64 by call to `WPACKET_start_sub_packet_len__` 
      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_client_sig_algs(SSL *s, WPACKET *pkt, int *al)\n{\n    size_t salglen;\n    const unsigned char *salg;\n    if (!SSL_CLIENT_USE_SIGALGS(s))\n        return 1;\n    salglen = tls12_get_psigalgs(s, &salg);\n    if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_signature_algorithms)\n            || !WPACKET_start_sub_packet_u16(pkt)\n            || !WPACKET_start_sub_packet_u16(pkt)\n            || !tls12_copy_sigalgs(s, pkt, salg, salglen)\n            || !WPACKET_close(pkt)\n            || !WPACKET_close(pkt)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_SIG_ALGS, 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}']