wm4 9473e5a05d 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>
(cherry picked from commit dc87758775)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

2015-06-18 22:09:01 +02:00

30 KiB

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