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BUG/MINOR: quic/ssl: crash in ClientHello callback ssl traces

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Such crashes may occur for QUIC frontends only when the SSL traces are enabled.

ssl_sock_switchctx_cbk() ClientHello callback may be called without any connection
initialize (<conn>) for QUIC connections leading to crashes when passing
conn->err_code to TRACE_ERROR().

Modify the TRACE_ERROR() statement to pass this parameter only when <conn> is
initialized.

Must be backported as far as 3.2.
This commit is contained in:
Frederic Lecaille 2025-11-27 11:22:46 +01:00
parent 36133759d3
commit dc13068eb4
1 changed files with 2 additions and 1 deletions
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3
src/ssl_clienthello.c
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@ -506,7 +506,8 @@ sni_lookup:
/* abort handshake (was SSL_TLSEXT_ERR_ALERT_FATAL) */
if (conn)
conn->err_code = CO_ER_SSL_HANDSHAKE;
TRACE_ERROR("No suitable SSL context found", SSL_EV_CONN_SWITCHCTX_CB|SSL_EV_CONN_ERR, conn, ssl, &conn->err_code);
TRACE_ERROR("No suitable SSL context found", SSL_EV_CONN_SWITCHCTX_CB|SSL_EV_CONN_ERR,
conn, ssl, conn ? &conn->err_code : NULL);
#if defined(OPENSSL_IS_BORINGSSL) || defined(OPENSSL_IS_AWSLC)
return ssl_select_cert_error;
#else