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avcodec/mlpdec: Check that there is enough data for headers

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Fixes: out of array access
Fixes: 1541/clusterfuzz-testcase-minimized-6403410590957568

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e3e51f8c14d22ae11684dcfe58df355f0f9e6401)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-13 23:13:38 +02:00
parent 0c92adda48
commit 6e46f19cc8
1 changed files with 5 additions and 0 deletions
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5
libavcodec/mlpdec.c
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@ -1175,6 +1175,11 @@ static int read_access_unit(AVCodecContext *avctx, void* data,
substr_header_size += 2;
}
if (length < header_size + substr_header_size) {
av_log(m->avctx, AV_LOG_ERROR, "Insuffient data for headers\n");
goto error;
}
if (!(nonrestart_substr ^ m->is_major_sync_unit)) {
av_log(m->avctx, AV_LOG_ERROR, "Invalid nonrestart_substr.\n");
goto error;