SB2026082769 - Heap-based buffer overflow in Linux kernel input rmi4 driver

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Main Vulnerability Database SB2026082769

SB2026082769 - Heap-based buffer overflow in Linux kernel input rmi4 driver

Published: August 27, 2026

Security Bulletin ID SB2026082769
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Heap-based buffer overflow (CVE-ID: CVE-2026-80570)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to execute arbitrary code or cause a denial of service.

The vulnerability exists due to a heap-based buffer overflow in rmi_f54_buffer_queue() when handling a failed report operation after the V4L2 format has been changed to a smaller size. A local user can trigger an error path that leaves a stale larger report size and cause it to be copied into a smaller buffer to execute arbitrary code or cause a denial of service.

The issue is caused by failure to clear f54->report_size on certain error paths in rmi_f54_work().


Remediation

Install update from vendor's website.

References