CVE-2025-38270

In the Linux kernel, the following vulnerability has been resolved: net: drv: netdevsim: don't napi_complete() from netpoll netdevsim supports netpoll. Make sure we don't call napi_complete() from it, since it may not be scheduled. Breno reports hitting a warning in napi_complete_done(): WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560 __napi_poll+0x2d8/0x3a0 handle_softirqs+0x1fe/0x710 This is presumably after netpoll stole the SCHED bit prematurely.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1264971017b4d7141352a7fe29021bdfce5d885d	Patch
https://git.kernel.org/stable/c/6837dd877270c57689bd866de9f3de14172c2439	Patch
https://git.kernel.org/stable/c/a8ff2e362d901200a1075c3ca9c56d9c7bbef389	Patch

Configurations

Configuration 1 (hide)

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

History

20 Nov 2025, 16:49

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.8
CPE		cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:6.16:rc1::::::
CWE		NVD-CWE-noinfo
First Time		Linux linux Kernel Linux
References	~~() https://git.kernel.org/stable/c/1264971017b4d7141352a7fe29021bdfce5d885d -~~	() https://git.kernel.org/stable/c/1264971017b4d7141352a7fe29021bdfce5d885d - Patch
References	~~() https://git.kernel.org/stable/c/6837dd877270c57689bd866de9f3de14172c2439 -~~	() https://git.kernel.org/stable/c/6837dd877270c57689bd866de9f3de14172c2439 - Patch
References	~~() https://git.kernel.org/stable/c/a8ff2e362d901200a1075c3ca9c56d9c7bbef389 -~~	() https://git.kernel.org/stable/c/a8ff2e362d901200a1075c3ca9c56d9c7bbef389 - Patch

Information

Published : 2025-07-10 08:15

Updated : 2025-11-20 16:49

NVD link : CVE-2025-38270

Mitre link : CVE-2025-38270

CVE.ORG link : CVE-2025-38270

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2025-38270", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-07-10T08:15:25.197", "references": [{"url": "https://git.kernel.org/stable/c/1264971017b4d7141352a7fe29021bdfce5d885d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6837dd877270c57689bd866de9f3de14172c2439", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a8ff2e362d901200a1075c3ca9c56d9c7bbef389", "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: drv: netdevsim: don't napi_complete() from netpoll\n\nnetdevsim supports netpoll. Make sure we don't call napi_complete()\nfrom it, since it may not be scheduled. Breno reports hitting a\nwarning in napi_complete_done():\n\nWARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560\n __napi_poll+0x2d8/0x3a0\n handle_softirqs+0x1fe/0x710\n\nThis is presumably after netpoll stole the SCHED bit prematurely."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: drv: netdevsim: no ejecutar napi_complete() desde netpoll. netdevsim es compatible con netpoll. Aseg\u00farese de no ejecutar napi_complete() desde \u00e9l, ya que podr\u00eda no estar programado. Breno informa de una advertencia en napi_complete_done(): ADVERTENCIA: CPU: 14 PID: 104 en net/core/dev.c:6592 napi_complete_done+0x2cc/0x560 __napi_poll+0x2d8/0x3a0 handle_softirqs+0x1fe/0x710. Presumiblemente, esto se debe a que netpoll rob\u00f3 el bit SCHED prematuramente."}], "lastModified": "2025-11-20T16:49:53.433", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F6499D2B-1E57-44BB-866C-D74E63C32759", "versionEndExcluding": "6.12.34", "versionStartIncluding": "6.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0541C761-BD5E-4C1A-8432-83B375D7EB92", "versionEndExcluding": "6.15.3", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}