ssl/statem/extensions_clnt.c:197: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [`pkt->written`, `pkt->written` + 4]):unsigned64 by call to `WPACKET_start_sub_packet_len__`.
Showing all 12 steps of the trace


ssl/statem/extensions_clnt.c:196:17: Call
194.       if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_supported_groups)
195.                  /* Sub-packet for supported_groups extension */
196.               || !WPACKET_start_sub_packet_u16(pkt)
                       ^
197.               || !WPACKET_start_sub_packet_u16(pkt)
198.               || !WPACKET_set_flags(pkt, WPACKET_FLAGS_NON_ZERO_LENGTH)) {

ssl/packet.c:272:1: Parameter `pkt->buf->length`
  270.   }
  271.   
  272. > int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
  273.   {
  274.       WPACKET_SUB *sub;

ssl/statem/extensions_clnt.c:197:17: Call
195.                  /* Sub-packet for supported_groups extension */
196.               || !WPACKET_start_sub_packet_u16(pkt)
197.               || !WPACKET_start_sub_packet_u16(pkt)
                       ^
198.               || !WPACKET_set_flags(pkt, WPACKET_FLAGS_NON_ZERO_LENGTH)) {
199.           SSLfatal(s, SSL_AD_INTERNAL_ERROR,

ssl/packet.c:272:1: Parameter `pkt->written`
  270.   }
  271.   
  272. > int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
  273.   {
  274.       WPACKET_SUB *sub;

ssl/packet.c:296:10: Call
  294.       }
  295.   
  296.       if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))
                  ^
  297.           return 0;
  298.       /* Convert to an offset in case the underlying BUF_MEM gets realloc'd */

ssl/packet.c:16:1: Parameter `pkt->written`
    14.   #define DEFAULT_BUF_SIZE    256
    15.   
    16. > int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
    17.   {
    18.       if (!WPACKET_reserve_bytes(pkt, len, allocbytes))

ssl/packet.c:18:10: Call
    16.   int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
    17.   {
    18.       if (!WPACKET_reserve_bytes(pkt, len, allocbytes))
                   ^
    19.           return 0;
    20.   

ssl/packet.c:40:1: <LHS trace>
38.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
39.   
40. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
41.   {
42.       /* Internal API, so should not fail */

ssl/packet.c:40:1: Parameter `pkt->buf->length`
      38.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
      39.   
      40. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
      41.   {
      42.       /* Internal API, so should not fail */

ssl/packet.c:40:1: <RHS trace>
38.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
39.   
40. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
41.   {
42.       /* Internal API, so should not fail */

ssl/packet.c:40:1: Parameter `len`
      38.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
      39.   
      40. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
      41.   {
      42.       /* Internal API, so should not fail */

ssl/packet.c:49:36: Binary operation: ([0, +oo] - [pkt->written, pkt->written + 4]):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)
{
    if (!ossl_assert(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;
}
['EXT_RETURN tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt,\n                                               unsigned int context, X509 *x,\n                                               size_t chainidx)\n{\n    const uint16_t *pgroups = NULL;\n    size_t num_groups = 0, i;\n    int min_version, max_version, reason;\n    if (!use_ecc(s))\n        return EXT_RETURN_NOT_SENT;\n    reason = ssl_get_min_max_version(s, &min_version, &max_version, NULL);\n    if (reason != 0) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR,\n                 SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_GROUPS, reason);\n        return EXT_RETURN_FAIL;\n    }\n    tls1_get_supported_groups(s, &pgroups, &num_groups);\n    if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_supported_groups)\n            || !WPACKET_start_sub_packet_u16(pkt)\n            || !WPACKET_start_sub_packet_u16(pkt)\n            || !WPACKET_set_flags(pkt, WPACKET_FLAGS_NON_ZERO_LENGTH)) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR,\n                 SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_GROUPS,\n                 ERR_R_INTERNAL_ERROR);\n        return EXT_RETURN_FAIL;\n    }\n    for (i = 0; i < num_groups; i++) {\n        uint16_t ctmp = pgroups[i];\n        if (tls_valid_group(s, ctmp, max_version)\n                && tls_curve_allowed(s, ctmp, SSL_SECOP_CURVE_SUPPORTED)) {\n            if (!WPACKET_put_bytes_u16(pkt, ctmp)) {\n                SSLfatal(s, SSL_AD_INTERNAL_ERROR,\n                         SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_GROUPS,\n                         ERR_R_INTERNAL_ERROR);\n                return EXT_RETURN_FAIL;\n            }\n        }\n    }\n    if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR,\n                 SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_GROUPS,\n                 ERR_R_INTERNAL_ERROR);\n        return EXT_RETURN_FAIL;\n    }\n    return EXT_RETURN_SENT;\n}', 'int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)\n{\n    WPACKET_SUB *sub;\n    unsigned char *lenchars;\n    if (!ossl_assert(pkt->subs != NULL))\n        return 0;\n    if ((sub = OPENSSL_zalloc(sizeof(*sub))) == NULL) {\n        SSLerr(SSL_F_WPACKET_START_SUB_PACKET_LEN__, ERR_R_MALLOC_FAILURE);\n        return 0;\n    }\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    if (!ossl_assert(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}']