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fix potential buffer over-read 

Originally committed as revision 10966 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2007-11-08 20:53:06 +00:00
parent cc04af3481
commit 73039e0fb4
1 changed files with 1 additions and 1 deletions
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2
libavformat/mpeg.c
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@ -121,7 +121,7 @@ static int mpegps_read_header(AVFormatContext *s,
s->ctx_flags |= AVFMTCTX_NOHEADER;
get_buffer(&s->pb, buffer, sizeof(buffer));
if ((p=memchr(buffer, 'S', sizeof(buffer))))
if ((p=memchr(buffer, 'S', sizeof(buffer)-5)))
if (!memcmp(p, "Sofdec", 6))
m->sofdec = 1;
url_fseek(&s->pb, -(offset_t)sizeof(buffer), SEEK_CUR);