{"id":"CVE-2026-98481","revision":"618f9b9d96c2404b8128c4c4d2ed6030","records":[{"revision":"618f9b9d96c2404b8128c4c4d2ed6030","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98481","aliases":[],"title":"nfc: port100: reject frames whose declared length exceeds the received data","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: port100: reject frames whose declared length exceeds the received data\n\nport100_recv_response() passes the URB transfer buffer to\nport100_rx_frame_is_valid(), which checksums le16_to_cpu(frame->datalen)\nbytes of frame->data. datalen is a 16-bit field supplied by the device\nand is never checked against the number of bytes actually received\n(urb->actual_length), so a device reporting a datalen larger than the\nreceived frame makes port100_data_checksum() read out of bounds past the\ntransfer buffer.\n\nReject a response whose declared frame size does not fit the received\nlength before validating it.\n\nFound by 0sec (https://0sec.ai) using automated source analysis; the\nmissing bound is evident from source. Compile-tested.","state":0,"publishedAt":"2026-10-18T15:15:55.36+00:00","modifiedAt":"2026-10-19T09:20:18.735+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/nfc/port100.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06\",\n                            \"lessThan\": \"0d482995f0cdd0302450aa300c684c642d8ab31f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06\",\n                            \"lessThan\": \"9e8df087826b9999d1b83b06f5d85675d5a69c9e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06\",\n                            \"lessThan\": \"db66a30588630c7de30ef033f00daddef69f6ad9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06\",\n                            \"lessThan\": \"144ad477c381e2c592b64898d04ab4ce03b32861\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06\",\n                            \"lessThan\": \"e4da1452e10c6472a4bac48dc2f6a35fff1fcd69\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06\",\n                            \"lessThan\": \"14b1467cfc6630583650f33538174c5a1ec685ab\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06\",\n                            \"lessThan\": \"035056e07ea65be670284246d9bc62f2f00ff4a3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06\",\n                            \"lessThan\": \"092c6a605cbd6414ef499834c2e0da69c2c3388e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/nfc/port100.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.55\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/0d482995f0cdd0302450aa300c684c642d8ab31f","https://git.kernel.org/stable/c/9e8df087826b9999d1b83b06f5d85675d5a69c9e","https://git.kernel.org/stable/c/db66a30588630c7de30ef033f00daddef69f6ad9","https://git.kernel.org/stable/c/144ad477c381e2c592b64898d04ab4ce03b32861","https://git.kernel.org/stable/c/e4da1452e10c6472a4bac48dc2f6a35fff1fcd69","https://git.kernel.org/stable/c/14b1467cfc6630583650f33538174c5a1ec685ab","https://git.kernel.org/stable/c/035056e07ea65be670284246d9bc62f2f00ff4a3","https://git.kernel.org/stable/c/092c6a605cbd6414ef499834c2e0da69c2c3388e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98481","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98481","identifiers":["CVE-2026-98481"]},"retained":false,"historicalAffected":[]}],"coverage":[]}