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Vulnerabilities CVE-2025-22037

CVE-2025-22037

High
Open
TLP:CLEAR

ksmbd: fix null pointer dereference in alloc_preauth_hash()

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Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete.

Details

CVSS Score
7.5
EPSS Score
65.74%

99.2th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence
90%
Published
Apr 16, 2025
Last Modified
Aug 5, 2026
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