SB20261007201 - Missing Release of Resource after Effective Lifetime in Linux kernel smb client

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Main Vulnerability Database SB20261007201

SB20261007201 - Missing Release of Resource after Effective Lifetime in Linux kernel smb client

Published: October 7, 2026

Security Bulletin ID SB20261007201
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-98172)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause an RDMA connection resource leak.

The vulnerability exists due to missing release of an established RDMA connection in the Linux kernel SMB client's cifs_get_tcp_session() function when session setup fails after smbd_get_connection() successfully establishes the connection. A local user can trigger this error path to cause an RDMA connection resource leak.

The session setup failure can occur when kthread_create() returns an error.


Remediation

Install update from vendor's website.

References