CVE-2023-0468: Linux Kernel

Medium severity, CVSS 4.7. EPSS: 0.3% chance of exploitation in the next 30 days.

A use-after-free flaw was found in io_uring/poll.c in io_poll_check_events in the io_uring subcomponent in the Linux Kernel due to a race condition of poll_refs. This flaw may cause a NULL pointer dereference.

Affected products

• Linux Linux Kernel: before 6.1 (fixed in 6.1); version 6.1 only

Published 2023-01-26. Last modified 2026-06-17.