CVE-2026-98577

CVE-2026-98577

published October 18, 2026

CVSS
—
EPSS
0%
Percentile
10.7
In the wild
Unconfirmed
What it is

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().

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00210 · 10.7th percentile
Published
2026-10-18T20:17Z
References (8)
https://git.kernel.org/stable/c/0a0412745c86acd089c6460da715ab966b1615e7 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c83a8a45fed256ccc5fe7160b436b671fc79fb8 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/408cff6bd60636df201274d320edfdfde9ed41db · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6fad2c34d451d11a9f3f946cae1105fee91d96b8 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aa555ed5ed0d15efbaf27e0e9f152a6df715278a · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf41af8f910cbb5d776a1dfa0671d31a7e262e28 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 20 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 18 OCT 15:18Z
    nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()
    cvelistv5
  • 18 OCT 15:18Z
    nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()
    cvelistv5