What is CVE-2023-0469?

CVE-2023-0469 is a medium-severity vulnerability in Linux Kernel, classified under Integer Underflow. CVSS score: 5.5/10. Published 2023-01-26.

How severe is CVE-2023-0469?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Use After Free in Linux Kernel

CVE-2023-0469

A use-after-free flaw was found in io_uring/filetable.c in io_install_fixed_file in the io_uring subcomponent in the Linux Kernel during call cleanup. This flaw may lead to a denial of service.

Published 2023-01-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Linux Kernel — versions 6.1
Kernel — versions Linux Kernel prior t oKernel 6.1 RC7

Weakness classification (CWE)

References

bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-0469?: CVE-2023-0469 is a medium-severity vulnerability in Linux Kernel, classified under Integer Underflow. CVSS score: 5.5/10. Published 2023-01-26.
How severe is CVE-2023-0469?: Medium severity. CVSS v3 base score is 5.5 out of 10.