CVE-2025-21955

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent connection release during oplock break notification ksmbd_work could be freed when after connection release. Increment r_count of ksmbd_conn to indicate that requests are not finished yet and to not release the connection.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

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/09aeab68033161cb54f194da93e51a11aee6144b	Patch
https://git.kernel.org/stable/c/3aa660c059240e0c795217182cf7df32909dd917	Patch
https://git.kernel.org/stable/c/8e6508c7ecb1802909f294827eff38f301d0c937
https://git.kernel.org/stable/c/a4261bbc33fbf99b99c80aa3a2c5097611802980	Patch
https://git.kernel.org/stable/c/f17d1c63a76b0fe8e9c78023a86507a3a6d62cfa	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::::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc6::::::

History

30 Oct 2026, 13:17

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/8e6508c7ecb1802909f294827eff38f301d0c937 -

Information

Published : 2025-04-01 16:15

Updated : 2026-10-30 13:17

NVD link : CVE-2025-21955

Mitre link : CVE-2025-21955

CVE.ORG link : CVE-2025-21955

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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Incremente r_count de ksmbd_conn para indicar que las solicitudes a\u00fan no han finalizado y para no liberar la conexi\u00f3n."}], "lastModified": "2026-10-30T13:17:54.560", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "107B8EDA-32AA-4F44-9637-99D648133FCA", "versionEndExcluding": "6.6.84", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "60E9C5DF-D778-4572-848A-5D6CFFE022CA", "versionEndExcluding": "6.12.20", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A20D4D7-B329-4C68-B662-76062EA7DCF0", "versionEndExcluding": "6.13.8", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D3E781C-403A-498F-9DA9-ECEE50F41E75"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "66619FB8-0AAF-4166-B2CF-67B24143261D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D3D6550E-6679-4560-902D-AF52DCFE905B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "45B90F6B-BEC7-4D4E-883A-9DBADE021750"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1759FFB7-531C-41B1-9AE1-FD3D80E0D920"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}