CVE-2026-98577

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().

Status

Received - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-10-18

Last modified

2026-10-19

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/0c83a8a45fed256ccc5fe7160b436b671fc79fb8
• https://git.kernel.org/stable/c/aa555ed5ed0d15efbaf27e0e9f152a6df715278a
• https://git.kernel.org/stable/c/32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8
• https://git.kernel.org/stable/c/6fad2c34d451d11a9f3f946cae1105fee91d96b8
• https://git.kernel.org/stable/c/bf41af8f910cbb5d776a1dfa0671d31a7e262e28
• https://git.kernel.org/stable/c/f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc
• https://git.kernel.org/stable/c/0a0412745c86acd089c6460da715ab966b1615e7
• https://git.kernel.org/stable/c/408cff6bd60636df201274d320edfdfde9ed41db