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avformat/rmdec: Better duplicate tags check 

Fixes: memleaks
Fixes: 44810/clusterfuzz-testcase-minimized-ffmpeg_dem_IVR_fuzzer-5619494647627776

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-02-24 00:26:08 +01:00
parent 13a153d801
commit 15a646e501
1 changed files with 5 additions and 4 deletions
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9
libavformat/rmdec.c
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@ -127,10 +127,6 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
uint32_t version;
int ret;
// Duplicate tags
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
return AVERROR_INVALIDDATA;
/* ra type header */
version = avio_rb16(pb); /* version */
if (version == 3) {
@ -330,6 +326,11 @@ int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
if (codec_data_size == 0)
return 0;
// Duplicate tags
if ( st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN
&& st->codecpar->codec_type != AVMEDIA_TYPE_DATA)
return AVERROR_INVALIDDATA;
avpriv_set_pts_info(st, 64, 1, 1000);
codec_pos = avio_tell(pb);
v = avio_rb32(pb);