SB20260720329 - Out-of-bounds write in Linux kernel input touchscreen driver

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Main Vulnerability Database SB20260720329

SB20260720329 - Out-of-bounds write in Linux kernel input touchscreen driver

Published: July 20, 2026

Security Bulletin ID SB20260720329
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds write (CVE-ID: CVE-2026-63908)

CWE-ID: CWE-787 - Out-of-bounds write

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


The vulnerability allows a local user to overwrite adjacent memory.

The vulnerability exists due to an out-of-bounds write in mxt_prepare_cfg_mem in the atmel_mxt_ts driver when parsing a crafted configuration file with an object size larger than the expected object size. A local user can provide a specially crafted configuration file to overwrite adjacent memory.

The issue is caused by an incorrect boundary check on a 0-based index, which allows exactly one byte past the valid object boundary to be written.


Remediation

Install update from vendor's website.

References