CVE-2025-22037

medium

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.

References

https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad

https://git.kernel.org/stable/c/c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780

https://git.kernel.org/stable/c/b8eb243e670ecf30e91524dd12f7260dac07d335

https://git.kernel.org/stable/c/8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d

Details

Source: Mitre, NVD

Published: 2025-04-16

Updated: 2025-04-17

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00018