CVE-2026-43219

In the Linux kernel, the following vulnerability has been resolved: net: cpsw_new: Fix potential unregister of netdev that has not been registered yet If an error occurs during register_netdev() for the first MAC in cpsw_register_ports(), even though cpsw->slaves[0].ndev is set to NULL, cpsw->slaves[1].ndev would remain unchanged. This could later cause cpsw_unregister_ports() to attempt unregistering the second MAC. To address this, add a check for ndev->reg_state before calling unregister_netdev(). With this change, setting cpsw->slaves[i].ndev to NULL becomes unnecessary and can be removed accordingly.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/14645799ad5253a028cf662e2f9cd18a68f74b31
https://git.kernel.org/stable/c/23acc565186ee27e788408cbd81b92730b6aaa3a
https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138	Patch
https://git.kernel.org/stable/c/349c4cac6f54a81fc107589771f88136a2b20415	Patch
https://git.kernel.org/stable/c/67cca9df4d17f2c824655d31195b2e75334ae286
https://git.kernel.org/stable/c/9d724b34fbe13b71865ad0906a4be97571f19cf5	Patch
https://git.kernel.org/stable/c/d31a12cee10bbc12b4b523a4709fd1fdee8b7d0f
https://git.kernel.org/stable/c/da8e1623a3028e1d8c75eec7898d94c6f17dce40

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-05-06 12:16

Updated : 2026-07-04 12:16

NVD link : CVE-2026-43219

Mitre link : CVE-2026-43219

CVE.ORG link : CVE-2026-43219

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-43219", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ed3525eda4c4983fb8509e488de0a351788041ba", "lessThan": "da8e1623a3028e1d8c75eec7898d94c6f17dce40", "versionType": "git"}, {"status": "affected", "version": "ed3525eda4c4983fb8509e488de0a351788041ba", "lessThan": "d31a12cee10bbc12b4b523a4709fd1fdee8b7d0f", "versionType": "git"}, {"status": "affected", "version": "ed3525eda4c4983fb8509e488de0a351788041ba", "lessThan": "23acc565186ee27e788408cbd81b92730b6aaa3a", "versionType": "git"}, {"status": "affected", "version": "ed3525eda4c4983fb8509e488de0a351788041ba", "lessThan": "67cca9df4d17f2c824655d31195b2e75334ae286", "versionType": "git"}, {"status": "affected", "version": "ed3525eda4c4983fb8509e488de0a351788041ba", "lessThan": "14645799ad5253a028cf662e2f9cd18a68f74b31", "versionType": "git"}, {"status": "affected", "version": "ed3525eda4c4983fb8509e488de0a351788041ba", "lessThan": "29739ec197ed66535bc0b86f14ab66c5f4512138", "versionType": "git"}, {"status": "affected", "version": "ed3525eda4c4983fb8509e488de0a351788041ba", "lessThan": "349c4cac6f54a81fc107589771f88136a2b20415", "versionType": "git"}, {"status": "affected", "version": "ed3525eda4c4983fb8509e488de0a351788041ba", "lessThan": "9d724b34fbe13b71865ad0906a4be97571f19cf5", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/ti/cpsw_new.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"status": "unaffected", "version": "0", "lessThan": "5.5", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.260", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.210", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.176", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.143", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.93", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.16", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.6", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/ti/cpsw_new.c"], "defaultStatus": "affected"}]}], "published": "2026-05-06T12:16:41.543", "references": [{"url": "https://git.kernel.org/stable/c/14645799ad5253a028cf662e2f9cd18a68f74b31", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/23acc565186ee27e788408cbd81b92730b6aaa3a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/349c4cac6f54a81fc107589771f88136a2b20415", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/67cca9df4d17f2c824655d31195b2e75334ae286", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9d724b34fbe13b71865ad0906a4be97571f19cf5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d31a12cee10bbc12b4b523a4709fd1fdee8b7d0f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/da8e1623a3028e1d8c75eec7898d94c6f17dce40", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: cpsw_new: Fix potential unregister of netdev that has not been registered yet\n\nIf an error occurs during register_netdev() for the first MAC in\ncpsw_register_ports(), even though cpsw->slaves[0].ndev is set to NULL,\ncpsw->slaves[1].ndev would remain unchanged. This could later cause\ncpsw_unregister_ports() to attempt unregistering the second MAC.\nTo address this, add a check for ndev->reg_state before calling\nunregister_netdev(). With this change, setting cpsw->slaves[i].ndev\nto NULL becomes unnecessary and can be removed accordingly."}], "lastModified": "2026-07-04T12:16:56.247", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "59AFA620-05EF-48C6-B742-D356BCBE7D2F", "versionEndExcluding": "6.18.16", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}