PT-2025-16677 · Linux+5 · Linux Kernel+5

Viacheslav Moskvin

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Published

2025-04-16

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Updated

2026-04-20

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CVE-2025-22037

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A null pointer dereference issue in the alloc preauth hash() function has been resolved. The issue occurs when a client sends a malformed SMB2 negotiate request, causing the server to return an error response. Subsequently, the client can send an SMB2 session setup request even though the connection's pre-authentication information is not allocated. This allows for potential exploitation.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2025-12647
BDU:2025-08100
CVE-2025-22037
ECHO-C9F2-BDDE-01A1
USN-7594-1
USN-7594-2
USN-7594-3
USN-7605-1
USN-7605-2
USN-7606-1
USN-7628-1
USN-8059-1
USN-8059-2
USN-8059-3
USN-8059-4
USN-8059-5
USN-8059-6
USN-8059-7
USN-8059-8
USN-8059-9
USN-8125-1
USN-8126-1
ZDI-25-310

Affected Products

Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Ubuntu