CVE-2023-2430

MEDIUM

5.5

CVSS v3

Description

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.

CWE-413 CWE-667

How to fix

Remediation Available

linuxDebian

Fixed in:6.1.52-1CVE-2023-2430

Fixed in:6.3.7-1CVE-2023-2430

linuxUbuntu

Fixed in:5.19.0-46.47USN-6192-1

linux-allwinnerUbuntu

Fixed in:5.19.0-1015.15USN-6192-1

linux-allwinner-5.19Ubuntu

Fixed in:5.19.0-1015.15~22.04.1USN-6192-1

linux-awsUbuntu

Fixed in:5.19.0-1028.29USN-6192-1

linux-aws-5.19Ubuntu

Fixed in:5.19.0-1028.29~22.04.1USN-6192-1

linux-azureUbuntu

Fixed in:5.19.0-1029.32USN-6192-1

linux-gcpUbuntu

Fixed in:5.19.0-1027.29USN-6192-1

linux-gcp-5.19Ubuntu

Fixed in:5.19.0-1027.29~22.04.1USN-6192-1

linux-hwe-5.19Ubuntu

Fixed in:5.19.0-46.47~22.04.1USN-6192-1

linux-ibmUbuntu

Fixed in:5.19.0-1025.27USN-6192-1

linux-image-5.19.0-1015-allwinnerUbuntu

Fixed in:5.19.0-1015.15~22.04.1USN-6192-1

Fixed in:5.19.0-1015.15USN-6192-1

linux-image-5.19.0-1020-starfiveUbuntu

Fixed in:5.19.0-1020.22~22.04.1USN-6192-1

Fixed in:5.19.0-1020.22USN-6192-1

linux-image-5.19.0-1022-raspiUbuntu

Fixed in:5.19.0-1022.29USN-6192-1

linux-image-5.19.0-1022-raspi-nolpaeUbuntu

Fixed in:5.19.0-1022.29USN-6192-1

linux-image-5.19.0-1025-ibmUbuntu

Fixed in:5.19.0-1025.27USN-6192-1

linux-image-5.19.0-1026-kvmUbuntu

Fixed in:5.19.0-1026.27USN-6192-1

linux-image-5.19.0-1026-oracleUbuntu

Fixed in:5.19.0-1026.29USN-6192-1

linux-image-5.19.0-1027-gcpUbuntu

Fixed in:5.19.0-1027.29~22.04.1USN-6192-1

Fixed in:5.19.0-1027.29USN-6192-1

linux-image-5.19.0-1028-awsUbuntu

Fixed in:5.19.0-1028.29~22.04.1USN-6192-1

Fixed in:5.19.0-1028.29USN-6192-1

linux-image-5.19.0-1028-lowlatencyUbuntu

Fixed in:5.19.0-1028.29USN-6192-1

linux-image-5.19.0-1028-lowlatency-64kUbuntu

Fixed in:5.19.0-1028.29USN-6192-1

linux-image-5.19.0-1029-azureUbuntu

Fixed in:5.19.0-1029.32USN-6192-1

linux-image-5.19.0-46-genericUbuntu

Fixed in:5.19.0-46.47~22.04.1USN-6192-1

Fixed in:5.19.0-46.47USN-6192-1

linux-image-5.19.0-46-generic-64kUbuntu

Fixed in:5.19.0-46.47~22.04.1USN-6192-1

Fixed in:5.19.0-46.47USN-6192-1

linux-image-5.19.0-46-generic-lpaeUbuntu

Fixed in:5.19.0-46.47~22.04.1USN-6192-1

Fixed in:5.19.0-46.47USN-6192-1

linux-image-6.0.0-1019-oemUbuntu

Fixed in:6.0.0-1019.19USN-6235-1

linux-image-6.1.0-1015-oemUbuntu

Fixed in:6.1.0-1015.15USN-6194-1

linux-image-allwinnerUbuntu

Fixed in:5.19.0.1015.15~22.04.8USN-6192-1

Fixed in:5.19.0.1015.15USN-6192-1

linux-image-awsUbuntu

Fixed in:5.19.0.1028.29~22.04.12USN-6192-1

Fixed in:5.19.0.1028.25USN-6192-1

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.15%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Patch1

git.kernel.org

Other references1

debian.org

Related Vulnerabilities

Other CWE-413 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-32748	High	7.5	8.9%	-	Fix
CVE-2019-17102	High	8.3	1.9%	-	Fix
CVE-2022-24946	High	7.5	1.6%	-	-
CVE-2022-20678	High	8.6	0.9%	-	-
CVE-2023-28649	High	8.6	0.5%	-	Fix
CVE-2023-33951	Medium	6.7	0.3%	-	Fix

Common questions

How do I fix CVE-2023-2430?

Published advisories record a fix for 58 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2023-2430 being actively exploited?

Not that we know of. CVE-2023-2430 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.15% is the estimated probability that it will be exploited in the next 30 days. That is higher than 5% of all scored CVEs.

How severe is CVE-2023-2430?

CVE-2023-2430 has a CVSS v3 base score of 5.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-2430 affect?

Published advisories record a fix for linux (Debian), linux (Ubuntu), linux-allwinner (Ubuntu), linux-allwinner-5.19 (Ubuntu), and 54 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-03-06.