What is CVE-2023-2430?

CVE-2023-2430 is a medium-severity vulnerability in Linux Kernel, classified under CWE-413. CVSS score: 5.5/10. Published 2023-07-23.

How severe is CVE-2023-2430?

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

Vulnerability in Linux Kernel

CVE-2023-2430

A vulnerability was found due to missing lock for IOPOLL flaw in io_cqring_event_overflow() in io_uring.c in Linux Kernel. This flaw allows a local attacker with user privilege to trigger a Denial of Service threat.

Published 2023-07-23 · 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: 0.002 (4.1th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Linux Kernel — versions 6.2
Kernel — versions Kernel Linux prior to Kernel 6.2 RC5

Weakness classification (CWE)

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch)
www.debian.org/security/2023/dsa-5492 (vendor-advisory)

Frequently asked questions

What is CVE-2023-2430?: CVE-2023-2430 is a medium-severity vulnerability in Linux Kernel, classified under CWE-413. CVSS score: 5.5/10. Published 2023-07-23.
How severe is CVE-2023-2430?: Medium severity. CVSS v3 base score is 5.5 out of 10.