mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/agm: Check that there is available input in read_code()
Fixes: Timeout (46sec -> 7ms) Fixes: 14030/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AGM_fuzzer-5721258760601600 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -103,6 +103,9 @@ static int read_code(GetBitContext *gb, int *oskip, int *level, int *map, int mo
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{
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{
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int len = 0, skip = 0, max;
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int len = 0, skip = 0, max;
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if (get_bits_left(gb) < 2)
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return AVERROR_INVALIDDATA;
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if (show_bits(gb, 2)) {
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if (show_bits(gb, 2)) {
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switch (show_bits(gb, 4)) {
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switch (show_bits(gb, 4)) {
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case 1:
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case 1:
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