CVE-2023-0468

MEDIUM

Linux Kernel - Use-After-Free in io_uring Poll Event Handling

Title source: llm

Description

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.

References (1)

Core 1

Core References

Exploit, Issue Tracking, Patch, Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2164024

Scores

CVSS v3 4.7

EPSS 0.0028

EPSS Percentile 19.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-416

Status published

Products (2)

linux/linux_kernel 6.1 (7 CPE variants)

linux/linux_kernel < 6.1

Published Jan 26, 2023

Tracked Since Feb 18, 2026