SB20261022226 - Out-of-bounds read in Linux kernel hid amd-sfh-hid driver

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Main Vulnerability Database SB20261022226

SB20261022226 - Out-of-bounds read in Linux kernel hid amd-sfh-hid driver

Published: October 22, 2026

Security Bulletin ID SB20261022226
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) Out-of-bounds read (CVE-ID: CVE-2026-98640)

CWE-ID: CWE-125 - Out-of-bounds read

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 through a kernel page fault.

The vulnerability exists due to an out-of-bounds read in the Linux kernel amd_sfh driver's PCI probe code when accessing MMIO registers without validating that PCI BAR 2 covers the required offsets. A local privileged user can trigger probing of a device with an undersized BAR 2 to cause an access beyond the mapped region and a kernel page fault.


Remediation

Install update from vendor's website.

References