CVE-2026-98577

Description

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().

References

• https://git.kernel.org/stable/c/0a0412745c86acd089c6460da715ab966b1615e7
• https://git.kernel.org/stable/c/0c83a8a45fed256ccc5fe7160b436b671fc79fb8
• https://git.kernel.org/stable/c/32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8
• https://git.kernel.org/stable/c/408cff6bd60636df201274d320edfdfde9ed41db
• https://git.kernel.org/stable/c/6fad2c34d451d11a9f3f946cae1105fee91d96b8