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Fix issues with hanging seed length

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Signed-off-by: Ben Taylor <ben.taylor@linaro.org>
This commit is contained in:
Ben Taylor 2026-06-01 07:59:06 +01:00
parent a58163a339
commit 4570537978
1 changed files with 5 additions and 1 deletions
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6
library/ssl_tls.c
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@ -6293,12 +6293,16 @@ static int ssl_compute_master(mbedtls_ssl_handshake_params *handshake,
#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
if (handshake->extended_ms == MBEDTLS_SSL_EXTENDED_MS_ENABLED) {
lbl = "extended master secret";
seed = session_hash;
ret = handshake->calc_verify(ssl, session_hash, &seed_len);
if (ret != 0) {
MBEDTLS_SSL_DEBUG_RET(1, "calc_verify", ret);
return ret;
}
if (seed_len > sizeof(session_hash)) {
MBEDTLS_SSL_DEBUG_MSG(1, ("bad session hash length"));
return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
}
seed = session_hash;
MBEDTLS_SSL_DEBUG_BUF(3, "session hash for extended master secret",
session_hash, seed_len);