CVE-2026-63866

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link() Clear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link routine.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/455a48685feebf2d9c1656caad77f9ba1da7b06e	Patch
https://git.kernel.org/stable/c/88973240dc7c976dd320b36a9e6d925c9be083ae	Patch
https://git.kernel.org/stable/c/c575459b485c47615491b1fd29f04b43fdc3da56	Patch

Configurations

Configuration 1 (hide)

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

History

26 Oct 2026, 16:51

Type	Values Removed	Values Added
First Time		Linux linux Kernel Linux
CWE		NVD-CWE-noinfo
CPE		cpe:2.3:o:linux:linux_kernel::::::::
References	~~() https://git.kernel.org/stable/c/455a48685feebf2d9c1656caad77f9ba1da7b06e -~~	() https://git.kernel.org/stable/c/455a48685feebf2d9c1656caad77f9ba1da7b06e - Patch
References	~~() https://git.kernel.org/stable/c/88973240dc7c976dd320b36a9e6d925c9be083ae -~~	() https://git.kernel.org/stable/c/88973240dc7c976dd320b36a9e6d925c9be083ae - Patch
References	~~() https://git.kernel.org/stable/c/c575459b485c47615491b1fd29f04b43fdc3da56 -~~	() https://git.kernel.org/stable/c/c575459b485c47615491b1fd29f04b43fdc3da56 - Patch

Information

Published : 2026-07-19 15:16

Updated : 2026-10-26 16:51

NVD link : CVE-2026-63866

Mitre link : CVE-2026-63866

CVE.ORG link : CVE-2026-63866

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-63866", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "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": "dd82a9e02c054052b5899872c1f32805428f6131", "lessThan": "455a48685feebf2d9c1656caad77f9ba1da7b06e", "versionType": "git"}, {"status": "affected", "version": "dd82a9e02c054052b5899872c1f32805428f6131", "lessThan": "c575459b485c47615491b1fd29f04b43fdc3da56", "versionType": "git"}, {"status": "affected", "version": "dd82a9e02c054052b5899872c1f32805428f6131", "lessThan": "88973240dc7c976dd320b36a9e6d925c9be083ae", "versionType": "git"}], "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7996/main.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"status": "unaffected", "version": "0", "lessThan": "6.15", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7996/main.c"], "defaultStatus": "affected"}]}], "published": "2026-07-19T15:16:53.517", "references": [{"url": "https://git.kernel.org/stable/c/455a48685feebf2d9c1656caad77f9ba1da7b06e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/88973240dc7c976dd320b36a9e6d925c9be083ae", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c575459b485c47615491b1fd29f04b43fdc3da56", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "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\nwifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()\n\nClear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link\nroutine."}], "lastModified": "2026-10-26T16:51:04.883", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "986D4552-0ECA-40C4-9708-6D088AC7A485", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}