{"id":"CVE-2026-98481","state":"PUBLISHED","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.","publishedAt":"2026-10-18T15:15:55.360Z","updatedAt":"2026-10-19T09:20:18.735Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"0d482995f0cdd0302450aa300c684c642d8ab31f","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"9e8df087826b9999d1b83b06f5d85675d5a69c9e","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"db66a30588630c7de30ef033f00daddef69f6ad9","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"144ad477c381e2c592b64898d04ab4ce03b32861","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"e4da1452e10c6472a4bac48dc2f6a35fff1fcd69","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"14b1467cfc6630583650f33538174c5a1ec685ab","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"035056e07ea65be670284246d9bc62f2f00ff4a3","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"092c6a605cbd6414ef499834c2e0da69c2c3388e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/nfc/port100.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/nfc/port100.c"]}],"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"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98481.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98481","state":"PUBLISHED","datePublished":"2026-10-18T15:15:55.360Z","dateUpdated":"2026-10-19T09:20:18.735Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.352Z"},"containers":{"cna":{"title":"nfc: port100: reject frames whose declared length exceeds the received data","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"0d482995f0cdd0302450aa300c684c642d8ab31f","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"9e8df087826b9999d1b83b06f5d85675d5a69c9e","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"db66a30588630c7de30ef033f00daddef69f6ad9","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"144ad477c381e2c592b64898d04ab4ce03b32861","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"e4da1452e10c6472a4bac48dc2f6a35fff1fcd69","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"14b1467cfc6630583650f33538174c5a1ec685ab","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"035056e07ea65be670284246d9bc62f2f00ff4a3","versionType":"git"},{"version":"562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06","status":"affected","lessThan":"092c6a605cbd6414ef499834c2e0da69c2c3388e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/nfc/port100.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/nfc/port100.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:20:18.735Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}