Overflow if `co_exceptiontable` is absurdly large

[federicovalenso]

Bug report

Bug description:

f.__code__ = f.__code__.replace(co_linetable=bytes(bytearray(2**31+1)))

It can lead to overflow in assemble.c

CPython versions tested on:

3.11

Operating systems tested on:

Linux

[picnixz]

Actually, how is co_exceptiontable related to a_except_table? Namely, can you write me a complete PoC please?

[ZeroIntensity]

This one doesn't seem like it's worth fixing, there's plenty of ways to crash the interpreter by messing with code objects.

[picnixz]

I think I'll close this one unless you can find me a simple reproducer.