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avformat/concatdec: Check file variable before dereferencing

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Fixes CID1322328

Reviewed-by: Ganesh Ajjanagadde <gajjanag@mit.edu>
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-09-03 13:35:37 +02:00
parent 5131ba5657
commit 9f6ca28e32
1 changed files with 5 additions and 0 deletions
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5
libavformat/concatdec.c
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@ -394,6 +394,11 @@ static int concat_read_header(AVFormatContext *avf)
av_log(avf, AV_LOG_ERROR, "Line %d: packet metadata required\n", line); av_log(avf, AV_LOG_ERROR, "Line %d: packet metadata required\n", line);
FAIL(AVERROR_INVALIDDATA); FAIL(AVERROR_INVALIDDATA);
} }
if (!file) {
av_log(avf, AV_LOG_ERROR, "Line %d: %s without file\n",
line, keyword);
FAIL(AVERROR_INVALIDDATA);
}
if ((ret = av_dict_parse_string(&file->metadata, metadata, "=", "", 0)) < 0) { if ((ret = av_dict_parse_string(&file->metadata, metadata, "=", "", 0)) < 0) {
av_log(avf, AV_LOG_ERROR, "Line %d: failed to parse metadata string\n", line); av_log(avf, AV_LOG_ERROR, "Line %d: failed to parse metadata string\n", line);
av_freep(&metadata); av_freep(&metadata);