nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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/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
European references
- ENISA EUVD · EUVD-2026-103622
- GCVE · GCVE-0-2026-98577
CERT-FR advisories
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < 0c83a8a45fed256ccc5fe7160b436b671fc79fb8 ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < aa555ed5ed0d15efbaf27e0e9f152a6df715278a ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < 32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8 ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < 6fad2c34d451d11a9f3f946cae1105fee91d96b8 ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < bf41af8f910cbb5d776a1dfa0671d31a7e262e28 ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc |
| Linux · Linux | affected 3.3 ; unaffected 0 < 3.3 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |