An issue was discovered in the Linux kernel through 6.5.9. During a race with SQ thread exit, an io_uring/fdinfo.c io_uring_show_fdinfo NULL pointer dereference can occur.
https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46