From 29823f285598a9170b1d2a706e6b83d4751acaba Mon Sep 17 00:00:00 2001
From: markster <markster@f38db490-d61c-443f-a65b-d21fe96a405b>
Date: Thu, 15 Apr 2004 16:02:42 +0000
Subject: Do proper bounds checking in formats (bug #1356)

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@2694 f38db490-d61c-443f-a65b-d21fe96a405b
---
 formats/format_wav_gsm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'formats/format_wav_gsm.c')

diff --git a/formats/format_wav_gsm.c b/formats/format_wav_gsm.c
index 1d33caffb..6c988bdb8 100755
--- a/formats/format_wav_gsm.c
+++ b/formats/format_wav_gsm.c
@@ -493,8 +493,9 @@ static int wav_seek(struct ast_filestream *fs, long sample_offset, int whence)
 		offset = distance + cur;
 	else if(whence == SEEK_END)
 		offset = max - distance;
+	// always protect against seeking past end of header
+	offset = (offset < min)?min:offset;
 	if (whence != SEEK_FORCECUR) {
-		offset = (offset < min)?min:offset;
 		offset = (offset > max)?max:offset;
 	} else if (offset > max) {
 		int i;
-- 
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