mirror of https://git.ffmpeg.org/ffmpeg.git
avformat/mpc8: Check remaining space in mpc8_parse_seektable()
Fixes: Fixes infinite loop
Fixes: 26704/clusterfuzz-testcase-minimized-ffmpeg_dem_MPC8_fuzzer-6327056939614208
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4f66dd13d0
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -177,6 +177,10 @@ static void mpc8_parse_seektable(AVFormatContext *s, int64_t off)
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av_add_index_entry(s->streams[0], pos, i, 0, 0, AVINDEX_KEYFRAME);
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}
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for(; i < size; i++){
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if (get_bits_left(&gb) < 13) {
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av_free(buf);
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return;
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}
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t = get_unary(&gb, 1, 33) << 12;
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t += get_bits(&gb, 12);
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if(t & 1)
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