ssl/tls13_enc.c:59: error: BUFFER_OVERRUN_S2
  Offset added: [max(1, `labellen`), +oo] (⇐ [0, +oo] + [max(1, `labellen`), `labellen`]) Size: [0, +oo] by call to `WPACKET_memcpy`.
Showing all 11 steps of the trace


ssl/tls13_enc.c:30:1: Parameter `labellen`
28.    * Returns 1 on success  0 on failure.
29.    */
30. > static int tls13_hkdf_expand(SSL *s, const unsigned char *secret,
31.                                const unsigned char *label, size_t labellen,
32.                                const unsigned char *hash,

ssl/tls13_enc.c:59:17: Call
57.               || !WPACKET_start_sub_packet_u8(&pkt)
58.               || !WPACKET_memcpy(&pkt, label_prefix, sizeof(label_prefix) - 1)
59.               || !WPACKET_memcpy(&pkt, label, labellen)
                      ^
60.               || !WPACKET_close(&pkt)
61.               || !WPACKET_sub_memcpy_u8(&pkt, hash, (hash == NULL) ? 0 : hashlen)

ssl/packet.c:329:1: <Offset trace>
327.   }
328.   
329. > int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)
330.   {
331.       unsigned char *dest;

ssl/packet.c:329:1: Parameter `len`
  327.   }
  328.   
  329. > int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)
  330.   {
  331.       unsigned char *dest;

ssl/packet.c:329:1: <Length trace>
327.   }
328.   
329. > int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)
330.   {
331.       unsigned char *dest;

ssl/packet.c:329:1: Parameter `*pkt->buf->data`
  327.   }
  328.   
  329. > int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)
  330.   {
  331.       unsigned char *dest;

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

ssl/packet.c:15:1: Parameter `**allocbytes`
    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: Parameter `**allocbytes`
      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:339:5: Array access: Offset added: [max(1, labellen), +oo] (⇐ [0, +oo] + [max(1, labellen), labellen]) Size: [0, +oo] by call to `WPACKET_memcpy` 
  337.           return 0;
  338.   
  339.       memcpy(dest, src, len);
             ^
  340.   
  341.       return 1;
