Linux Kernel up to 6.18.19/6.19.9/7.0-rc3/7.0-rc4 bond_header_parse infinite loop

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.18.19/6.19.9/7.0-rc3/7.0-rc4. The affected element is the function bond_header_parse. The manipulation results in infinite loop. This vulnerability is reported as CVE-2026-23451. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.18.19/6.19.9/7.0-rc3/7.0-rc4. Affected is the function bond_header_parse. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-23451 since 01/13/2026. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 326000 (SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:2800-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.20, 6.19.10, 7.0-rc4 or 7.0-rc5 eliminates this vulnerability. Applying the patch 946bb6cacf0ccada7bc80f1cfa07c1ed79511c1c/4172a7901cf43fe1cc63ef7a2ef33735ff7b7d13/9b49c854f14f5e2d493e562a1e28d2e57fe37371/b7405dcf7385445e10821777143f18c3ce20fa04 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (326000) and CERT Bund (WID-SEC-2026-0985). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Microsoft Azure Linux

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (Linux): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 326000
Nessus Name: SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:2800-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.20/6.19.10/7.0-rc4/7.0-rc5
Patch: 946bb6cacf0ccada7bc80f1cfa07c1ed79511c1c/4172a7901cf43fe1cc63ef7a2ef33735ff7b7d13/9b49c854f14f5e2d493e562a1e28d2e57fe37371/b7405dcf7385445e10821777143f18c3ce20fa04

Timelineinfo

01/13/2026 CVE reserved
04/03/2026 +79 days Advisory disclosed
04/03/2026 +0 days VulDB entry created
07/12/2026 +100 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23451 (🔒)
GCVE (CVE): GCVE-0-2026-23451
GCVE (VulDB): GCVE-100-355152
CERT Bund: WID-SEC-2026-0985 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 04/03/2026 18:13
Updated: 07/12/2026 20:41
Changes: 04/03/2026 18:13 (58), 05/21/2026 03:04 (11), 06/25/2026 10:30 (7), 07/12/2026 20:41 (2)
Complete: 🔍
Cache ID: 216::103

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