What is CVE-2023-52340?

CVE-2023-52340 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, classified as a Uncontrolled Resource Consumption flaw (CWE-400). CVE-2023-52340 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52340?

CVE-2023-52340 has a CVSS score of 7.5 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-52340?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-52340 patch availability.

Is CVE-2023-52340 actively exploited?

CVE-2023-52340 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Uncontrolled Resource Consumption (CWE-400)?

The product does not properly control the amount of resources it consumes, leading to exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/400.html

CVE-2023-52340

High

The IPv6 implementation in the Linux kernel before 6.3 has a net/ipv6/route.c max_size threshold that can be consumed easily, e.g., leading to a denial of service (network is unreachable errors) when IPv6 packets are sent in a loop via a raw socket.

Package Linux Kernel

Published 2024-07-05

Last modified 2025-11-04

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.5

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-400

CVE-2023-52340 is a Uncontrolled Resource Consumption vulnerability

What is Uncontrolled Resource Consumption?

The product does not properly control the amount of resources it consumes, leading to exhaustion. Learn more on MITRE CWE

References

5 total

Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3

Mailing List Patch
Kernel Git
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=af6d10345ca76670c1b7c37799f0d5576ccef277

Mailing List Patch
Debian Security
https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
Debian Security
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Security
https://security.netapp.com/advisory/ntap-20240816-0005/

Details

CVE ID CVE-2023-52340

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2024-07-05

Modified 2025-11-04

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-52340?

CVE-2023-52340 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 , classified as an Uncontrolled Resource Consumption flaw (CWE-400) . CVE-2023-52340 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52340?

CVE-2023-52340 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-52340?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-52340 patch availability.
Is CVE-2023-52340 actively exploited?

No. CVE-2023-52340 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.