ssl/statem/statem_clnt.c:3015: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [`pkt->written`, `pkt->written` + 2]):unsigned64 by call to `WPACKET_allocate_bytes`.
Showing all 9 steps of the trace


ssl/statem/statem_clnt.c:2959:1: Parameter `pkt->written`
2957.   }
2958.   
2959. > static int tls_construct_cke_rsa(SSL *s, WPACKET *pkt)
2960.   {
2961.   #ifndef OPENSSL_NO_RSA

ssl/statem/statem_clnt.c:3015:10: Call
3013.           goto err;
3014.       }
3015.       if (!WPACKET_allocate_bytes(pkt, enclen, &encdata)
                 ^
3016.               || EVP_PKEY_encrypt(pctx, encdata, &enclen, pms, pmslen) <= 0) {
3017.           SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,

crypto/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))

crypto/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.   

crypto/packet.c:43:1: <LHS trace>
41.                           : NULL))
42.   
43. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
44.   {
45.       /* Internal API, so should not fail */

crypto/packet.c:43:1: Parameter `pkt->buf->length`
    41.                           : NULL))
    42.   
    43. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
    44.   {
    45.       /* Internal API, so should not fail */

crypto/packet.c:43:1: <RHS trace>
41.                           : NULL))
42.   
43. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
44.   {
45.       /* Internal API, so should not fail */

crypto/packet.c:43:1: Parameter `len`
    41.                           : NULL))
    42.   
    43. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
    44.   {
    45.       /* Internal API, so should not fail */

crypto/packet.c:52:30: Binary operation: ([0, +oo] - [pkt->written, pkt->written + 2]):unsigned64 by call to `WPACKET_allocate_bytes` 
    50.           return 0;
    51.   
    52.       if (pkt->buf != NULL && (pkt->buf->length - pkt->written < len)) {
                                       ^
    53.           size_t newlen;
    54.           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->buf != 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;
}
['static int tls_construct_cke_rsa(SSL *s, WPACKET *pkt)\n{\n#ifndef OPENSSL_NO_RSA\n    unsigned char *encdata = NULL;\n    EVP_PKEY *pkey = NULL;\n    EVP_PKEY_CTX *pctx = NULL;\n    size_t enclen;\n    unsigned char *pms = NULL;\n    size_t pmslen = 0;\n    if (s->session->peer == NULL) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n                 ERR_R_INTERNAL_ERROR);\n        return 0;\n    }\n    pkey = X509_get0_pubkey(s->session->peer);\n    if (EVP_PKEY_get0_RSA(pkey) == NULL) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n                 ERR_R_INTERNAL_ERROR);\n        return 0;\n    }\n    pmslen = SSL_MAX_MASTER_KEY_LENGTH;\n    pms = OPENSSL_malloc(pmslen);\n    if (pms == NULL) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n                 ERR_R_MALLOC_FAILURE);\n        return 0;\n    }\n    pms[0] = s->client_version >> 8;\n    pms[1] = s->client_version & 0xff;\n    if (RAND_bytes(pms + 2, (int)(pmslen - 2)) <= 0) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n                 ERR_R_MALLOC_FAILURE);\n        goto err;\n    }\n    if (s->version > SSL3_VERSION && !WPACKET_start_sub_packet_u16(pkt)) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n                 ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    pctx = EVP_PKEY_CTX_new(pkey, NULL);\n    if (pctx == NULL || EVP_PKEY_encrypt_init(pctx) <= 0\n        || EVP_PKEY_encrypt(pctx, NULL, &enclen, pms, pmslen) <= 0) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n                 ERR_R_EVP_LIB);\n        goto err;\n    }\n    if (!WPACKET_allocate_bytes(pkt, enclen, &encdata)\n            || EVP_PKEY_encrypt(pctx, encdata, &enclen, pms, pmslen) <= 0) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n                 SSL_R_BAD_RSA_ENCRYPT);\n        goto err;\n    }\n    EVP_PKEY_CTX_free(pctx);\n    pctx = NULL;\n    if (s->version > SSL3_VERSION && !WPACKET_close(pkt)) {\n        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n                 ERR_R_INTERNAL_ERROR);\n        goto err;\n    }\n    if (!ssl_log_rsa_client_key_exchange(s, encdata, enclen, pms, pmslen)) {\n        goto err;\n    }\n    s->s3.tmp.pms = pms;\n    s->s3.tmp.pmslen = pmslen;\n    return 1;\n err:\n    OPENSSL_clear_free(pms, pmslen);\n    EVP_PKEY_CTX_free(pctx);\n    return 0;\n#else\n    SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA,\n             ERR_R_INTERNAL_ERROR);\n    return 0;\n#endif\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->buf != 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}']