From: Juliusz Sosinowicz <juliusz@wolfssl.com>
Date: Fri, 18 Jul 2025 12:20:02 +0000 (+0200)
Subject: wolfssl: Treat !data->in_data as a WANT_READ
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e19aa2d0a13f8d63a38e917a816e991680311b81;p=thirdparty%2Fhostap.git

wolfssl: Treat !data->in_data as a WANT_READ

If data->in_data is NULL, wpabuf_len(data->in_data) will result in a
segfault as wpabuf_len does not have a NULL check inside.

Signed-off-by: Juliusz Sosinowicz <juliusz@wolfssl.com>
---

diff --git a/src/crypto/tls_wolfssl.c b/src/crypto/tls_wolfssl.c
index 3bf52d64e..87abbde90 100644
--- a/src/crypto/tls_wolfssl.c
+++ b/src/crypto/tls_wolfssl.c
@@ -166,6 +166,9 @@ static int wolfssl_receive_cb(WOLFSSL *ssl, char *buf, int sz, void *ctx)
 	if (!data)
 		return -1;
 
+	if (!data->in_data)
+		return -2; /* WANT_READ */
+
 	if (get > (wpabuf_len(data->in_data) - data->consumed))
 		get = wpabuf_len(data->in_data) - data->consumed;