CVE-2025-38432

In the Linux kernel, the following vulnerability has been resolved: net: netpoll: Initialize UDP checksum field before checksumming commit f1fce08e63fe ("netpoll: Eliminate redundant assignment") removed the initialization of the UDP checksum, which was wrong and broke netpoll IPv6 transmission due to bad checksumming. udph->check needs to be set before calling csum_ipv6_magic().

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/353016ec159f939a380ff6746476a779367ba9a3	Patch
https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc3::::::

History

19 Nov 2025, 18:12

Type	Values Removed	Values Added
First Time		Linux linux Kernel Linux
CPE		cpe:2.3:o:linux:linux_kernel:6.16:rc2:::::: cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:6.16:rc3:::::: cpe:2.3:o:linux:linux_kernel:6.16:rc1::::::
CWE		NVD-CWE-noinfo
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
References	~~() https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3 -~~	() https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3 - Patch
References	~~() https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd -~~	() https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd - Patch

Information

Published : 2025-07-25 15:15

Updated : 2025-11-19 18:12

NVD link : CVE-2025-38432

Mitre link : CVE-2025-38432

CVE.ORG link : CVE-2025-38432

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2025-38432", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "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}]}, "published": "2025-07-25T15:15:28.263", "references": [{"url": "https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: netpoll: Initialize UDP checksum field before checksumming\n\ncommit f1fce08e63fe (\"netpoll: Eliminate redundant assignment\") removed\nthe initialization of the UDP checksum, which was wrong and broke\nnetpoll IPv6 transmission due to bad checksumming.\n\nudph->check needs to be set before calling csum_ipv6_magic()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: netpoll: Inicializar el campo de suma de comprobaci\u00f3n UDP antes del commit de suma de comprobaci\u00f3n f1fce08e63fe (\"netpoll: Eliminar la asignaci\u00f3n redundante\") elimin\u00f3 la inicializaci\u00f3n de la suma de comprobaci\u00f3n UDP, lo cual era incorrecto y rompi\u00f3 la transmisi\u00f3n IPv6 de netpoll debido a una suma de comprobaci\u00f3n incorrecta. udph->check debe configurarse antes de llamar a csum_ipv6_magic()."}], "lastModified": "2025-11-19T18:12:08.420", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4823E88-411C-4CCD-AA8D-3917D070E873", "versionEndExcluding": "6.15.5", "versionStartIncluding": "6.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "415BF58A-8197-43F5-B3D7-D1D63057A26E"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}