mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/x86/diracdsp: Fix incorrect src addressing in dequant_subband_32()
Fixes: Segfault (not reproducable with asm, which made this hard to debug)
Fixes: decoding errors
Fixes: 19854/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5729372837511168
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0694b60b7b
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -294,8 +294,9 @@ cglobal dequant_subband_32, 7, 7, 4, src, dst, stride, qf, qs, tot_v, tot_h
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add srcq, mmsize
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add dstq, mmsize
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sub tot_hd, 4
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sub tot_hq, 4
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jg .loop_h
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lea srcq, [srcq + 4*tot_hq]
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add r3, strideq
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dec tot_vd
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