CVE-2023-0240

A logic error was found in the io_uring subsystem of the Linux kernel. This issue occurs due to an incorrect assumption that the last io_grab_identity call could not return false in the io_prep_async_work function, leading to reference counting issues and a use-after-free issue. This could allow a local user to crash or escalate their privileges on the system.

Red Hat Enterprise Linux is not affected by this flaw, as the io_uring (CONFIG_IO_URING) is not enabled in any current shipping kernels.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.