Public bug reported: Python 3.8.0 to 3.8.2 include a bug which breaks subinterpereters nearly in their entirety.
If a subinterpereter initializes asyncio (a library used by many other libraries), then exits, and another subinterpereter initializes asyncio, there will be a use-after-free and segmentation fault. See: https://bugs.python.org/issue40294 A main.c small test program is attached to that bug which replicates the issue. The bug has been fixed as of 3.8.3 and 3.9.0. I attached a patch which backports the one-line fix to a 3.8.2-1ubuntu1.2 version for focal. I am writing a piece of software that I fear will be unusable on focal without this backport, since the default python3 is python 3.8.2-1ubuntu1.1 at the time of writing. Since it does not contain the fix, my application crashes. ** Affects: python3.8 (Ubuntu) Importance: Undecided Status: New ** Tags: after asyncio bpo40294 free gh-19542 gh-19565 use use-after-free ** Patch added: "1-3.8.2-1ubuntu1.2.debdiff" https://bugs.launchpad.net/bugs/1887847/+attachment/5393231/+files/1-3.8.2-1ubuntu1.2.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1887847 Title: python3.8 subinterpereters cause use-after-free in asyncio To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python3.8/+bug/1887847/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
