{"api_version":"1","generated_at":"2026-10-26T08:56:35+00:00","cve":"CVE-2026-98883","urls":{"html":"https://cve.report/CVE-2026-98883","api":"https://cve.report/api/cve/CVE-2026-98883.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98883","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98883"},"summary":{"title":"serial: 8250_port: recognize UPIO_AU","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_port: recognize UPIO_AU\n\nMy MIPS Alchemy systems generate the following warning during\nprobe of the 8250 driver:\n\nWARNING: drivers/tty/serial/8250/8250_port.c:462 at set_io_from_upio+0xfc/0x124, CPU#0: swapper/0/1\nUnsupported UART type 4\n[...]\n[<80521d40>] set_io_from_upio+0xfc/0x124\n[<80521dfc>] serial8250_set_defaults+0x94/0xe0\n[<80520fb4>] serial8250_register_8250_port+0x288/0x51c\n[<805214ec>] serial8250_probe+0x160/0x1e8\n[<8053b5f0>] platform_probe+0x64/0x90\n\nThe least invasive fix is to recognize UPIO_AU (type 4) in set_io_from_upio()\nand do nothing, since all parameters have already been set up in\n8250_rt288x.c::au_platform_setup().\n\nRun-tested on Alchemy Au1300 platform.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 12:18:21","updated_at":"2026-10-26 07:17:13"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/9f67997353caa29c6a080789a1fb6e01fb50c118","name":"https://git.kernel.org/stable/c/9f67997353caa29c6a080789a1fb6e01fb50c118","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/49fa670efdfdd27e29145cbd2beef065c08717ef","name":"https://git.kernel.org/stable/c/49fa670efdfdd27e29145cbd2beef065c08717ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98883","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98883","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c7e6c8924e7bf98db4e5b2edb202842003c00c2 9f67997353caa29c6a080789a1fb6e01fb50c118 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7c7e6c8924e7bf98db4e5b2edb202842003c00c2 49fa670efdfdd27e29145cbd2beef065c08717ef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/tty/serial/8250/8250_port.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9f67997353caa29c6a080789a1fb6e01fb50c118","status":"affected","version":"7c7e6c8924e7bf98db4e5b2edb202842003c00c2","versionType":"git"},{"lessThan":"49fa670efdfdd27e29145cbd2beef065c08717ef","status":"affected","version":"7c7e6c8924e7bf98db4e5b2edb202842003c00c2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/tty/serial/8250/8250_port.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_port: recognize UPIO_AU\n\nMy MIPS Alchemy systems generate the following warning during\nprobe of the 8250 driver:\n\nWARNING: drivers/tty/serial/8250/8250_port.c:462 at set_io_from_upio+0xfc/0x124, CPU#0: swapper/0/1\nUnsupported UART type 4\n[...]\n[<80521d40>] set_io_from_upio+0xfc/0x124\n[<80521dfc>] serial8250_set_defaults+0x94/0xe0\n[<80520fb4>] serial8250_register_8250_port+0x288/0x51c\n[<805214ec>] serial8250_probe+0x160/0x1e8\n[<8053b5f0>] platform_probe+0x64/0x90\n\nThe least invasive fix is to recognize UPIO_AU (type 4) in set_io_from_upio()\nand do nothing, since all parameters have already been set up in\n8250_rt288x.c::au_platform_setup().\n\nRun-tested on Alchemy Au1300 platform."}],"providerMetadata":{"dateUpdated":"2026-10-26T06:56:06.942Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9f67997353caa29c6a080789a1fb6e01fb50c118"},{"url":"https://git.kernel.org/stable/c/49fa670efdfdd27e29145cbd2beef065c08717ef"}],"title":"serial: 8250_port: recognize UPIO_AU","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98883","datePublished":"2026-10-23T11:37:38.372Z","dateReserved":"2026-09-25T10:25:14.378Z","dateUpdated":"2026-10-26T06:56:06.942Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 12:18:21","lastModifiedDate":"2026-10-26 07:17:13","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98883","Ordinal":"1","Title":"serial: 8250_port: recognize UPIO_AU","CVE":"CVE-2026-98883","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98883","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_port: recognize UPIO_AU\n\nMy MIPS Alchemy systems generate the following warning during\nprobe of the 8250 driver:\n\nWARNING: drivers/tty/serial/8250/8250_port.c:462 at set_io_from_upio+0xfc/0x124, CPU#0: swapper/0/1\nUnsupported UART type 4\n[...]\n[<80521d40>] set_io_from_upio+0xfc/0x124\n[<80521dfc>] serial8250_set_defaults+0x94/0xe0\n[<80520fb4>] serial8250_register_8250_port+0x288/0x51c\n[<805214ec>] serial8250_probe+0x160/0x1e8\n[<8053b5f0>] platform_probe+0x64/0x90\n\nThe least invasive fix is to recognize UPIO_AU (type 4) in set_io_from_upio()\nand do nothing, since all parameters have already been set up in\n8250_rt288x.c::au_platform_setup().\n\nRun-tested on Alchemy Au1300 platform.","Type":"Description","Title":"serial: 8250_port: recognize UPIO_AU"}]}}}