SB20261022473 - NULL pointer dereference in Linux kernel of driver

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Main Vulnerability Database SB20261022473

SB20261022473 - NULL pointer dereference in Linux kernel of driver

Published: October 22, 2026

Security Bulletin ID SB20261022473
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) NULL pointer dereference (CVE-ID: CVE-2026-98854)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to cause a denial of service by triggering a kernel NULL pointer dereference.

The vulnerability exists due to improper handling of a negative changeset identifier in free_overlay_changeset() when cleaning up after an ID allocation failure during device tree overlay application. A local privileged user can trigger this error path, if able to initiate overlay application under these failure conditions, to cause a kernel crash and denial of service.


Remediation

Install update from vendor's website.

References