SB2026102279 - NULL pointer dereference in Linux kernel pci driver

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Main Vulnerability Database SB2026102279

SB2026102279 - NULL pointer dereference in Linux kernel pci driver

Published: October 22, 2026

Security Bulletin ID SB2026102279
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-2026-98504)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/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 through an early boot hang.

The vulnerability exists due to a null pointer dereference in the Linux kernel functions of_pci_prop_bus_range() and of_pci_prop_intr_map() when generating device tree properties for a PCI bridge without an allocated subordinate bus. A local user can exploit this condition during PCI initialization to cause an early boot hang.

The issue requires CONFIG_PCI_DYNAMIC_OF_NODES to be enabled.


Remediation

Install update from vendor's website.

References