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 and patched in 6.18.20 and 6.19.10. 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?

Yes, CVE-2026-23451 has been patched. Fixed versions include 6.18.20 and 6.19.10. If you are running Linux kernel 6.18.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

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 2026-07-24

CVSS version 3.1

Patch available

Yes

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. Fixed in 6.18.20, 6.19.10 and their respective stable series.

Affected from

≥ 6.18.19 ≥ 6.19.9

Fixed in

✓ 6.18.20 6.18.x ✓ 6.19.10 6.19.x

References

5 total

Kernel Git
https://git.kernel.org/stable/c/4172a7901cf43fe1cc63ef7a2ef33735ff7b7d13

Patch
Kernel Git
https://git.kernel.org/stable/c/946bb6cacf0ccada7bc80f1cfa07c1ed79511c1c

Patch
Kernel Git
https://git.kernel.org/stable/c/9b49c854f14f5e2d493e562a1e28d2e57fe37371

Patch
Kernel Git
https://git.kernel.org/stable/c/b7405dcf7385445e10821777143f18c3ce20fa04

Patch
Kernel Git
https://git.kernel.org/stable/c/9532d0d0ad1d726c06f807e8f0f1ec93cbabb452

Details

CVE ID CVE-2026-23451

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2026-04-03

Modified 2026-07-24

KEV No

Patch

Yes

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 and has been patched in 6.18.20 and 6.19.10. 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?

Yes. CVE-2026-23451 has been patched. Fixed versions include 6.18.20 and 6.19.10. If you are running Linux kernel 6.18.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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.