mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/faxcompr: Check if bits are available before reading in cmode == 9 || cmode == 10
Fixes: Timeout
Fixes: 34950/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5686764151898112
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 7d8421e3d5
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -301,7 +301,10 @@ static int decode_group3_2d_line(AVCodecContext *avctx, GetBitContext *gb,
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mode = !mode;
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}
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} else if (cmode == 9 || cmode == 10) {
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int xxx = get_bits(gb, 3);
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int xxx;
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if (get_bits_left(gb) < 3)
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return AVERROR_INVALIDDATA;
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xxx = get_bits(gb, 3);
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if (cmode == 9 && xxx == 7) {
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int ret;
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int pix_left = width - offs;
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