SB20261023199 - Improper initialization in Linux kernel gpio driver

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Main Vulnerability Database SB20261023199

SB20261023199 - Improper initialization in Linux kernel gpio driver

Published: October 23, 2026

Security Bulletin ID SB20261023199
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-2026-98971)

CWE-ID: CWE-665 - Improper Initialization

CVSSv4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to disrupt device ID allocation and potentially cause a denial of service.

The vulnerability exists due to improper initialization of the stored device ID in gpio_exar_probe() when cleanup-action registration fails during device probing. A local privileged user can trigger a device initialization attempt that encounters this failure to cause exar_devm_ida_free() to release ID 0 instead of the allocated ID, potentially leaking a nonzero ID and incorrectly releasing ID 0 belonging to another device.


Remediation

Install update from vendor's website.

References