From: Stefan Brüns <redacted>
Date: Tue, 24 Nov 2015 19:55:14 +0000 (+0100)
Subject: input/wav: increase search range for data chunk, report errors
X-Git-Tag: libsigrok-0.4.0~88
X-Git-Url: http://sigrok.org/gitweb/?a=commitdiff_plain;h=b944e336d60cb9948b757f47a97b9f3bf145f534;p=libsigrok.git

input/wav: increase search range for data chunk, report errors
---

diff --git a/src/input/wav.c b/src/input/wav.c
index d1299cd3..e04a0016 100644
--- a/src/input/wav.c
+++ b/src/input/wav.c
@@ -37,7 +37,7 @@
 #define MIN_DATA_CHUNK_OFFSET    45
 
 /* Expect to find the "data" chunk within this offset from the start. */
-#define MAX_DATA_CHUNK_OFFSET    256
+#define MAX_DATA_CHUNK_OFFSET    1024
 
 #define WAVE_FORMAT_PCM_         0x0001
 #define WAVE_FORMAT_IEEE_FLOAT_  0x0003
@@ -175,6 +175,9 @@ static int find_data_chunk(GString *buf, int initial_offset)
 		offset += 8 + RL32(buf->str + offset + 4);
 	}
 
+	if (offset > MAX_DATA_CHUNK_OFFSET)
+		return -1;
+
 	return offset;
 }