Commit ffbe087b authored by Reimar Döffinger's avatar Reimar Döffinger
Browse files

Fix cmd_pos bounds check to avoid the overflow case.

Originally committed as revision 19640 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 84c1b149
......@@ -191,7 +191,7 @@ static int decode_dvd_subtitles(AVSubtitle *sub_header,
cmd_pos = READ_OFFSET(buf + cmd_pos);
while ((cmd_pos + 2 + offset_size) < buf_size) {
while (cmd_pos > 0 && cmd_pos < buf_size - 2 - offset_size) {
date = AV_RB16(buf + cmd_pos);
next_cmd_pos = READ_OFFSET(buf + cmd_pos + 2);
dprintf(NULL, "cmd_pos=0x%04x next=0x%04x date=%d\n",
......
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