SB20260925218 - Incorrect authorization in Linux kernel pci driver

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Main Vulnerability Database SB20260925218

SB20260925218 - Incorrect authorization in Linux kernel pci driver

Published: September 25, 2026

Security Bulletin ID SB20260925218
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Incorrect authorization (CVE-ID: CVE-2026-93206)

CWE-ID: CWE-863 - Incorrect Authorization

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to disclose PCI configuration-space information.

The vulnerability exists due to improper authorization using the credentials of the calling task rather than the opening process in proc_bus_pci_read() when reading PCI configuration space through procfs. A local privileged user can pass a file descriptor opened with CAP_SYS_ADMIN to an unprivileged process to disclose PCI configuration-space information.


Remediation

Install update from vendor's website.

References