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FFmpeg/libavcodec
Michael Niedermayer f2507dba3b avcodec/dxv: Use av_fast_realloc() and clear all new space
The code writing in the buffer has a wide range of error checks
which simply leave it partly uninitialized.

Initializing it on allocation ensures no sensitive data leaks and that
bugs are more reliably reproduceable

Fixes: use of uninitialized memory
Fixes: 435225510/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_DEC_fuzzer-4521918634196992

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 4a0b793737)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2025-08-19 17:56:46 +02:00
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