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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-03-17 20:17:55 +02:00
FFmpeg/libavformat
wm4 dc87758775 avio: fix potential crashes when combining ffio_ensure_seekback + crc
Calling ffio_ensure_seekback() if ffio_init_checksum() has been called
on the same context can lead to out of bounds memory accesses and
crashes. The reason is that ffio_ensure_seekback() does not update
checksum_ptr after reallocating the buffer, resulting in a dangling
pointer.

This effectively fixes potential crashes when opening mp3 files.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-17 01:13:19 +02:00
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