CVE-2026-98577nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()
Updated under an hour ago ()
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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().
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from d646960f7986fefb460a2b062d5ccc8ccfeacc3a before 0c83a8a45fed256ccc5fe7160b436b671fc79fb8; from d646960f7986fefb460a2b062d5ccc8ccfeacc3a before aa555ed5ed0d15efbaf27e0e9f152a6df715278a; from d646960f7986fefb460a2b062d5ccc8ccfeacc3a before 32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8; from d646960f7986fefb460a2b062d5ccc8ccfeacc3a before 6fad2c34d451d11a9f3f946cae1105fee91d96b8; from d646960f7986fefb460a2b062d5ccc8ccfeacc3a before bf41af8f910cbb5d776a1dfa0671d31a7e262e28; from d646960f7986fefb460a2b062d5ccc8ccfeacc3a before f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc; from d646960f7986fefb460a2b062d5ccc8ccfeacc3a before 0a0412745c86acd089c6460da715ab966b1615e7; from d646960f7986fefb460a2b062d5ccc8ccfeacc3a before 408cff6bd60636df201274d320edfdfde9ed41db | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.