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avcodec/pngdec: Check for fctl after idat
authorMichael Niedermayer <michael@niedermayer.cc>
Thu, 25 Jun 2020 17:22:01 +0000 (19:22 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 1 Jul 2020 09:41:35 +0000 (11:41 +0200)
commit65b1ba680fb67902a9c876a49d0146eaae5a1c3d
treeb76ac2cae6e8b0290f637e94d22001df348e64ddtree | snapshot
parentb5e39880fb7269b1b3577cee288e06aa3dc1dfa2commit | diff
avcodec/pngdec: Check for fctl after idat

Fixes: out of array access
Fixes: 23554/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APNG_fuzzer-4796622520451072.fuzz
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/pngdec.c diff | blob | history
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