CVE-2026-98909

net: cpsw_new: unregister devlink on port registration failure

Published Oct 23, 2026 CVSS 3.1 · 1.9 Low EPSS < 1% KEV · Not listed

Description

In the Linux kernel, the following vulnerability has been resolved:

net: cpsw_new: unregister devlink on port registration failure

cpsw_probe() registers devlink before registering the CPSW ports.

If cpsw_register_ports() fails, the error path only unregisters the
notifiers and then releases the lower level resources. It does not undo
the successful cpsw_register_devlink() call, leaving the devlink instance
and its parameters registered after probe has failed.

Add a devlink cleanup label for the path where devlink registration has
already succeeded, and use it when port registration fails.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`ed3525eda4c4983fb8509e488de0a351788041ba`	affected	< b020390b4ef39adc40c800301042baf812280da1
`ed3525eda4c4983fb8509e488de0a351788041ba`	affected	< 5a5ac0defdd42e566f1c871272370b6a3a8eef5c
`ed3525eda4c4983fb8509e488de0a351788041ba`	affected	< 43d4af5c5331ea739a49cb1097d41e502ed91ec4
`ed3525eda4c4983fb8509e488de0a351788041ba`	affected	< 8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0
`ed3525eda4c4983fb8509e488de0a351788041ba`	affected	< 2bcf21ede6b097ca96cb1f7679761acca6510555
`ed3525eda4c4983fb8509e488de0a351788041ba`	affected	< 0a44945b0d3422f5d81b49c97e293f3e21a8c585
`ed3525eda4c4983fb8509e488de0a351788041ba`	affected	< b64f763b607426ac97e44b114f0b8844ac3b86dd

Linux

affected

Version	Status	Constraints
`5.5`	affected	—
`0`	unaffected	< 5.5
`5.10.271`	unaffected	≤ 5.10.*
`5.15.222`	unaffected	≤ 5.15.*
`6.1.189`	unaffected	≤ 6.1.*
`6.6.158`	unaffected	≤ 6.6.*
`6.12.111`	unaffected	≤ 6.12.*
`6.18.53`	unaffected	≤ 6.18.*
`7.2`	unaffected	≤ *

No data.

Vendor Product Versions

Linux

Version	Status	Scheme	Platform
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,b020390b4ef39adc40c800301042baf812280da1)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,5a5ac0defdd42e566f1c871272370b6a3a8eef5c)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,43d4af5c5331ea739a49cb1097d41e502ed91ec4)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,2bcf21ede6b097ca96cb1f7679761acca6510555)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,0a44945b0d3422f5d81b49c97e293f3e21a8c585)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,b64f763b607426ac97e44b114f0b8844ac3b86dd)`	affected	code_commit	—
`[0,5.10.271)`	affected	semver	—
`[0,5.15.222)`	affected	semver	—
`[0,6.1.189)`	affected	semver	—
`[0,6.6.158)`	affected	semver	—
`[0,6.12.111)`	affected	semver	—
`[0,6.18.53)`	affected	semver	—

Linux

Version	Status	Scheme	Platform
`[5.10.271,5.11.0)`	unaffected	semver	—
`[5.15.222,5.16.0)`	unaffected	semver	—
`[6.1.189,6.2.0)`	unaffected	semver	—
`[6.6.158,6.7.0)`	unaffected	semver	—
`[6.12.111,6.13.0)`	unaffected	semver	—
`[6.18.53,6.19.0)`	unaffected	semver	—
`[7.2,*]`	unaffected	generic	—

Linux

Linux Kernel

Version	Status	Scheme	Platform
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,b020390b4ef39adc40c800301042baf812280da1)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,5a5ac0defdd42e566f1c871272370b6a3a8eef5c)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,43d4af5c5331ea739a49cb1097d41e502ed91ec4)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,2bcf21ede6b097ca96cb1f7679761acca6510555)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,0a44945b0d3422f5d81b49c97e293f3e21a8c585)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,b64f763b607426ac97e44b114f0b8844ac3b86dd)`	affected	code_commit	—
`[0,5.10.271)`	affected	semver	—
`[0,5.15.222)`	affected	semver	—
`[0,6.1.189)`	affected	semver	—
`[0,6.6.158)`	affected	semver	—
`[0,6.12.111)`	affected	semver	—
`[0,6.18.53)`	affected	semver	—

Linux

Linux Kernel

Version	Status	Scheme	Platform
`[5.10.271,5.11.0)`	unaffected	semver	—
`[5.15.222,5.16.0)`	unaffected	semver	—
`[6.1.189,6.2.0)`	unaffected	semver	—
`[6.6.158,6.7.0)`	unaffected	semver	—
`[6.12.111,6.13.0)`	unaffected	semver	—
`[6.18.53,6.19.0)`	unaffected	semver	—
`[7.2,*]`	unaffected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Ubuntu USN	USN-8961-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9019-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9020-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9022-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9023-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9024-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9025-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9026-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9029-1	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-9039-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-9040-1	Linux kernel (Low Latency NVIDIA) vulnerabilities
Ubuntu USN	USN-9066-1	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-9091-1	Linux kernel (NVIDIA Tegra) vulnerabilities

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.187% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98909.mbox
https://git.kernel.org/stable/c/0a44945b0d3422f5d81b49c97e293f3e21a8c585
https://git.kernel.org/stable/c/2bcf21ede6b097ca96cb1f7679761acca6510555
https://git.kernel.org/stable/c/43d4af5c5331ea739a49cb1097d41e502ed91ec4
https://git.kernel.org/stable/c/5a5ac0defdd42e566f1c871272370b6a3a8eef5c
https://git.kernel.org/stable/c/8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0
https://git.kernel.org/stable/c/b020390b4ef39adc40c800301042baf812280da1
https://git.kernel.org/stable/c/b64f763b607426ac97e44b114f0b8844ac3b86dd
https://nvd.nist.gov/vuln/detail/CVE-2026-98909
https://www.cve.org/CVERecord?id=CVE-2026-98909

History

Oct 27, 2026 2:45 PM Weaknesses updated View changes

Type	Values Removed	Values Added
Weaknesses	CWE-399

Oct 27, 2026 12:30 PM Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-459
References		https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98909.mbox https://nvd.nist.gov/vuln/detail/CVE-2026-98909 https://www.cve.org/CVERecord?id=CVE-2026-98909
Metrics	threat_severity `None`	cvssV3_1 `{'score': 1.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L'}` threat_severity `Low`

Oct 23, 2026 6:00 PM Weaknesses updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-399

Oct 23, 2026 3:15 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Linux linux
Vendors & Products		Linux linux

Oct 23, 2026 12:00 PM Description updated. Title updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references View changes

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: net: cpsw_new: unregister devlink on port registration failure cpsw_probe() registers devlink before registering the CPSW ports. If cpsw_register_ports() fails, the error path only unregisters the notifiers and then releases the lower level resources. It does not undo the successful cpsw_register_devlink() call, leaving the devlink instance and its parameters registered after probe has failed. Add a devlink cleanup label for the path where devlink registration has already succeeded, and use it when port registration fails.
Title		net: cpsw_new: unregister devlink on port registration failure
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/0a44945b0d3422f5d81b49c97e293f3e21a8c585 https://git.kernel.org/stable/c/2bcf21ede6b097ca96cb1f7679761acca6510555 https://git.kernel.org/stable/c/43d4af5c5331ea739a49cb1097d41e502ed91ec4 https://git.kernel.org/stable/c/5a5ac0defdd42e566f1c871272370b6a3a8eef5c https://git.kernel.org/stable/c/8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0 https://git.kernel.org/stable/c/b020390b4ef39adc40c800301042baf812280da1 https://git.kernel.org/stable/c/b64f763b607426ac97e44b114f0b8844ac3b86dd