From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Wed, 27 Nov 2013 09:26:53 +0000 (-0500)
Subject: Fix: check packet index len
X-Git-Tag: v1.2.0-rc1~39^2~9
X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=a74d9cb2e7b76755f5c52652eb0879eacc2a564c

Fix: check packet index len

Found by coverity:

** CID 1132646:  Untrusted value as argument  (TAINTED_SCALAR)
/formats/ctf/ctf.c: 1715 in import_stream_packet_inde)

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c
index 317457e8..278956b8 100644
--- a/formats/ctf/ctf.c
+++ b/formats/ctf/ctf.c
@@ -1716,6 +1716,11 @@ int import_stream_packet_index(struct ctf_trace *td,
 		ret = -1;
 		goto error;
 	}
+	if (index_hdr.packet_index_len == 0) {
+		fprintf(stderr, "[error] Packet index length cannot be 0.\n");
+		ret = -1;
+		goto error;
+	}
 
 	while ((index_read = fread(&ctf_index, index_hdr.packet_index_len, 1,
 					pos->index_fp)) == 1) {