SB2026102253 - Out-of-bounds read in Linux kernel nfc driver

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026102253

SB2026102253 - Out-of-bounds read in Linux kernel nfc driver

Published: October 22, 2026

Security Bulletin ID SB2026102253
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-98481)

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

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows an attacker with physical access to system to trigger an out-of-bounds kernel memory read that may cause a denial of service.

The vulnerability exists due to an out-of-bounds read in the Linux kernel NFC port100 driver when validating device-supplied response frames without checking their declared length against the actual received length. An attacker with physical access to system can supply a response with a 16-bit datalen value exceeding the received data length to make port100_data_checksum() read past the transfer buffer, potentially causing a kernel crash.


Remediation

Install update from vendor's website.

References