ffmpeg/libavcodec
Michael Niedermayer a0577e9877
avcodec/pngdec: Check last AVFrame before deref
Fixes: NULL pointer dereference
Fixes: 68184/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APNG_fuzzer-4926478069334016

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 091fdce87e88c8622d8af89ffa6cbb0dc20c3816)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-05-22 22:04:31 +02:00
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