Vulnerability in Linux

[ Description ]Official 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().

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund18 Oct 2026WID-SEC-2026-4019

  Linux Kernel: Multiple vulnerabilities Translated from German

  CVE-2026-98866CVE-2026-98624CVE-2026-98745+326 more CVEs

[ References ]References

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