SB20261023245 - NULL pointer dereference in Linux kernel linux mtd

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Main Vulnerability Database SB20261023245

SB20261023245 - NULL pointer dereference in Linux kernel linux mtd

Published: October 23, 2026

Security Bulletin ID SB20261023245
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-2026-98931)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/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.

The vulnerability exists due to a null pointer dereference in the Linux kernel SPI-NAND subsystem when probing a device with the "nand-no-ecc-engine" device tree property set. A local privileged user can trigger probing of such a device, if able to do so, to cause a kernel oops because the code checks the ECC engine's integration type without verifying that the engine pointer is non-null.


Remediation

Install update from vendor's website.

References