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avcodec/flicvideo: Check remaining bytes in FLI*COPY

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Fixes: Timeout
Fixes: 37795/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLIC_fuzzer-4846536543043584

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 2021-09-14 20:31:39 +02:00
parent 018b611b4b
commit 5f835efbca
1 changed files with 2 additions and 0 deletions
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2
libavcodec/flicvideo.c
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@ -735,6 +735,8 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
bytestream2_skip(&g2, chunk_size - 6);
} else {
if (bytestream2_get_bytes_left(&g2) < 2 * s->avctx->width * s->avctx->height )
return AVERROR_INVALIDDATA;
for (y_ptr = 0; y_ptr < s->frame->linesize[0] * s->avctx->height;
y_ptr += s->frame->linesize[0]) {