CVE-2026-98577Medium· 5.3▾ SunlitA flaw was found in the Linux kernel's Near Field Communication (NFC) subsystem. In the Logical Link Control Protocol (LLCP) implementation, the kernel validates service names using only the length of the provided name instead of verifying…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
Last analysed / modified upstream
0.2%
— → 5.3
none → medium
0.2% → 0.2%
A flaw was found in the Linux kernel's Near Field Communication (NFC) subsystem. In the Logical Link Control Protocol (LLCP) implementation, the kernel validates service names using only the length of the provided name instead of verifying an exact match. A local attacker could exploit this flaw by supplying a shortened service name to improperly bind to and hijack a Well-Known Service Access Point (WKS SAP). This issue could allow an attacker to intercept communications intended for legitimate NFC services or cause a denial of service.
kernel: nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap() — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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