SB2026072038 - Improper handling of exceptional conditions in Linux kernel spi driver

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Main Vulnerability Database SB2026072038

SB2026072038 - Improper handling of exceptional conditions in Linux kernel spi driver

Published: July 20, 2026

Security Bulletin ID SB2026072038
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper handling of exceptional conditions (CVE-ID: CVE-2026-64170)

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists due to improper handling of error pointers in the spi-qup DMA initialization logic when handling DMA setup failures during driver probe. A local user can trigger a DMA setup failure and subsequent probe error or driver unbind to cause a denial of service.

The issue can lead to dereferencing an error pointer or attempting to release a DMA channel a second time.


Remediation

Install update from vendor's website.

References