SB20261007160 - Out-of-bounds read in Linux kernel input rmi4 driver

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Main Vulnerability Database SB20261007160

SB20261007160 - Out-of-bounds read in Linux kernel input rmi4 driver

Published: October 7, 2026

Security Bulletin ID SB20261007160
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) Out-of-bounds read (CVE-ID: CVE-2026-98204)

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

CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause an out-of-bounds read.

The vulnerability exists due to incorrect block-length calculation in rmi_smb_write_block() when splitting writes into SMBus blocks. A local user can trigger a write with an input length greater than 32 bytes and a partial final block to cause an out-of-bounds read.

The final partial block causes smb_block_write() to read 32 bytes even when fewer bytes remain in the input buffer.


Remediation

Install update from vendor's website.

References