SB20261007188 - Improper initialization in Linux kernel smb client

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Main Vulnerability Database SB20261007188

SB20261007188 - Improper initialization in Linux kernel smb client

Published: October 7, 2026

Security Bulletin ID SB20261007188
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper initialization (CVE-ID: CVE-2026-98174)

CWE-ID: CWE-665 - Improper Initialization

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper initialization in the SMB client's TCP_Server_Info.rlist when adding a server node to the reconnection list. A local user can trigger reconnection processing involving an improperly initialized node to cause a denial of service.

The zero-initialized list pointers cause list_empty() to return false and list_add() to dereference a NULL prev pointer.


Remediation

Install update from vendor's website.

References