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- Fix CVE-2026-55991, Remote DNS-over-QUIC (DoQ) flow-control

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assertion failure in libngtcp2. Thanks to Qifan Zhang, Palo Alto
  Networks, for the report. In addition, thanks to Xuanchao Xie,
  for also reporting this issue.
This commit is contained in:
W.C.A. Wijngaards
2026-07-22 10:19:02 +02:00
parent ae1b3810cc
commit aac261cbb3
2 changed files with 34 additions and 16 deletions
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testcode/doqclient.c
+2 -2
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@@ -1519,9 +1519,9 @@ doq_client_send_pkt(struct doq_client_data* data, uint32_t ecn, uint8_t* buf,
}
log_err("doq sendmsg: %s", strerror(errno));
#ifdef HAVE_NGTCP2_CCERR_DEFAULT
ngtcp2_ccerr_set_application_error(&data->ccerr, -1, NULL, 0);
ngtcp2_ccerr_set_application_error(&data->ccerr, 1, NULL, 0);
#else
ngtcp2_connection_close_error_set_application_error(&data->last_error, -1, NULL, 0);
ngtcp2_connection_close_error_set_application_error(&data->last_error, 1, NULL, 0);
#endif
return 0;
}