What is CVE-2026-23451?

CVE-2026-23451 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, classified as a Infinite Loop flaw (CWE-835), affecting Linux kernel versions from 6.18.19 onward. CVE-2026-23451 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23451?

CVE-2026-23451 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-2026-23451?

No patch is currently available for CVE-2026-23451. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2026-23451 actively exploited?

CVE-2026-23451 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Infinite Loop (CWE-835)?

The product contains an iteration that does not exit even when it should. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/835.html

CVE-2026-23451

High

In the Linux kernel, the following vulnerability has been resolved: bonding: prevent potential infinite loop in bond_header_parse() bond_header_parse() can loop if a stack of two bonding devices is setup, because skb->dev always points to the hierarchy top. Add new "const struct net_device *dev" parameter to (struct header_ops)->parse() method to make sure the recursion is bounded, and that the final leaf parse method is called.

Package Linux Kernel

Published 2026-04-03

Last modified 2026-05-21

CVSS version 3.1

Patch available

Not yet patched

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-835

CVE-2026-23451 is a Infinite Loop vulnerability

What is Infinite Loop?

The product contains an iteration that does not exit even when it should. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.18.19, 6.19.9 and later are affected. No fixed version recorded yet.

Affected from

≥ 6.18.19 ≥ 6.19.9

References

The following references provide additional information about CVE-2026-23451 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/4172a7901cf43fe1cc63ef7a2ef33735ff7b7d13
Patch
Kernel patch commit
https://git.kernel.org/stable/c/946bb6cacf0ccada7bc80f1cfa07c1ed79511c1c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9b49c854f14f5e2d493e562a1e28d2e57fe37371
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2026-23451

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2026-04-03

Modified 2026-05-21

KEV No

Patch

Not yet patched

Package linux

Frequently asked questions

What is CVE-2026-23451?

CVE-2026-23451 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 , classified as an Infinite Loop flaw (CWE-835) . It affects Linux kernel versions from 6.18.19 onward . CVE-2026-23451 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23451?

CVE-2026-23451 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-2026-23451?

No patch is currently available for CVE-2026-23451. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2026-23451 actively exploited?

No — CVE-2026-23451 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Infinite Loop (CWE-835)?

The product contains an iteration that does not exit even when it should. View CWE-835 on MITRE CWE →