CVE-2026-98577

Updated on 18 Oct 2026

Severity

5.3 Medium severity

Details

CVSS score
5.3

Overview

About vulnerability

In the Linux kernel, the following vulnerability has been resolved:

nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()

nfc_llcp_wks_sap() compares only service_name_len bytes, so a short service_name like “u” matches longer WKS strings like “urn:nfc:sn:snep”. Fix by requiring exact length match before strncmp().

Details

Fixes

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
Ubuntu 22.04 Planned —
Ubuntu 22.04 AWS Planned —
Ubuntu 22.04 Azure Planned —
Ubuntu 26.04 Planned —