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().

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
d646960f7986fefb460a2b062d5ccc8ccfeacc3a affected < 0c83a8a45fed256ccc5fe7160b436b671fc79fb8
d646960f7986fefb460a2b062d5ccc8ccfeacc3a affected < aa555ed5ed0d15efbaf27e0e9f152a6df715278a
d646960f7986fefb460a2b062d5ccc8ccfeacc3a affected < 32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8
d646960f7986fefb460a2b062d5ccc8ccfeacc3a affected < 6fad2c34d451d11a9f3f946cae1105fee91d96b8
d646960f7986fefb460a2b062d5ccc8ccfeacc3a affected < bf41af8f910cbb5d776a1dfa0671d31a7e262e28
d646960f7986fefb460a2b062d5ccc8ccfeacc3a affected < f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc
d646960f7986fefb460a2b062d5ccc8ccfeacc3a affected < 0a0412745c86acd089c6460da715ab966b1615e7
d646960f7986fefb460a2b062d5ccc8ccfeacc3a affected < 408cff6bd60636df201274d320edfdfde9ed41db
Linux Linux affected
Version Status Constraints
3.3 affected —
0 unaffected < 3.3
5.10.271 unaffected ≤ 5.10.*
5.15.222 unaffected ≤ 5.15.*
6.1.189 unaffected ≤ 6.1.*
6.6.158 unaffected ≤ 6.6.*
6.12.112 unaffected ≤ 6.12.*
6.18.55 unaffected ≤ 6.18.*
7.2.9 unaffected ≤ 7.2.*
7.3-rc5 unaffected ≤ *

No data.

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0a0412745c86acd089c6460da715ab966b1615e7 cve-icon cve-icon
https://git.kernel.org/stable/c/0c83a8a45fed256ccc5fe7160b436b671fc79fb8 cve-icon cve-icon
https://git.kernel.org/stable/c/32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8 cve-icon cve-icon
https://git.kernel.org/stable/c/408cff6bd60636df201274d320edfdfde9ed41db cve-icon cve-icon
https://git.kernel.org/stable/c/6fad2c34d451d11a9f3f946cae1105fee91d96b8 cve-icon cve-icon
https://git.kernel.org/stable/c/aa555ed5ed0d15efbaf27e0e9f152a6df715278a cve-icon cve-icon
https://git.kernel.org/stable/c/bf41af8f910cbb5d776a1dfa0671d31a7e262e28 cve-icon cve-icon
https://git.kernel.org/stable/c/f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc cve-icon cve-icon
History

Sun, 18 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
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().
Title nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-18T15:18:47.635Z

Reserved: 2026-09-25T10:25:14.358Z

Link: CVE-2026-98577

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-18T16:17:10.053

Modified: 2026-10-18T16:17:10.053

Link: CVE-2026-98577

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.