{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98481","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.352Z","datePublished":"2026-10-18T15:15:55.360Z","dateUpdated":"2026-10-19T09:20:18.735Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-19T09:20:18.735Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/nfc/port100.c"],"versions":[{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","lessThan":"0d482995f0cdd0302450aa300c684c642d8ab31f","status":"affected","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","lessThan":"9e8df087826b9999d1b83b06f5d85675d5a69c9e","status":"affected","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","lessThan":"db66a30588630c7de30ef033f00daddef69f6ad9","status":"affected","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","lessThan":"144ad477c381e2c592b64898d04ab4ce03b32861","status":"affected","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","lessThan":"e4da1452e10c6472a4bac48dc2f6a35fff1fcd69","status":"affected","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","lessThan":"14b1467cfc6630583650f33538174c5a1ec685ab","status":"affected","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","lessThan":"035056e07ea65be670284246d9bc62f2f00ff4a3","status":"affected","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","lessThan":"092c6a605cbd6414ef499834c2e0da69c2c3388e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/nfc/port100.c"],"versions":[{"version":"3.13","status":"affected"},{"version":"0","lessThan":"3.13","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0d482995f0cdd0302450aa300c684c642d8ab31f"},{"url":"https://git.kernel.org/stable/c/9e8df087826b9999d1b83b06f5d85675d5a69c9e"},{"url":"https://git.kernel.org/stable/c/db66a30588630c7de30ef033f00daddef69f6ad9"},{"url":"https://git.kernel.org/stable/c/144ad477c381e2c592b64898d04ab4ce03b32861"},{"url":"https://git.kernel.org/stable/c/e4da1452e10c6472a4bac48dc2f6a35fff1fcd69"},{"url":"https://git.kernel.org/stable/c/14b1467cfc6630583650f33538174c5a1ec685ab"},{"url":"https://git.kernel.org/stable/c/035056e07ea65be670284246d9bc62f2f00ff4a3"},{"url":"https://git.kernel.org/stable/c/092c6a605cbd6414ef499834c2e0da69c2c3388e"}],"title":"nfc: port100: reject frames whose declared length exceeds the received data","x_generator":{"engine":"bippy-1.2.0"}}}}