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avformat/rmdec: Check codec_data_size 

Fixes infinite loop
Fixes Ticket4154

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-12-03 20:01:18 +01:00
parent eac5c7b837
commit a6f730730b
1 changed files with 3 additions and 0 deletions
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3
libavformat/rmdec.c
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@ -312,6 +312,9 @@ ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
int64_t codec_pos; int64_t codec_pos;
int ret; int ret;
if (codec_data_size < 0)
return AVERROR_INVALIDDATA;
avpriv_set_pts_info(st, 64, 1, 1000); avpriv_set_pts_info(st, 64, 1, 1000);
codec_pos = avio_tell(pb); codec_pos = avio_tell(pb);
v = avio_rb32(pb); v = avio_rb32(pb);