{"id":"CVE-2026-90194","state":"PUBLISHED","title":"ACPI: scan: fix bus ID cleanup on device_add() failures","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: scan: fix bus ID cleanup on device_add() failures\n\nWhen device_add() fails after acpi_device_set_name() has allocated an\ninstance ID and a new acpi_device_bus_id has been linked into\nacpi_bus_id_list, the rollback path only removes wakeup_list and\ndetaches the ACPI handle data.\n\nThat leaves the bus-ID bookkeeping behind and keeps the allocated\ninstance number consumed.\n\nMove the bus-ID cleanup and wakeup-list removal into a single helper.\n\nUse it from both the normal device teardown path and the device_add()\nrollback path. The wakeup list node is initialized before registration,\nso it can be deleted without checking whether the device is wakeup-\ncapable like in the original teardown path.\n\n[ rjw: Rename acpi_device_del_list() to acpi_device_cleanup() ]\n[ rjw: Subject and changelog edits ]","publishedAt":"2026-09-17T16:07:14.317Z","updatedAt":"2026-10-19T08:59:30.730Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"8cc2017aa804f157e717b5fd471e50fbddfec654","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"f30379b8a4e24623594235dd5aefb2957e0cc228","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"83ee65feadc88de681abc6e977d54eceda95abd7","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"15512c6b5dea72fb5f1f41c1aa96f3f32531ca03","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"0b9053cd0955c7cd66d71a8442be33926d70e197","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"a414485ebc2aa50907d0ce97cde2b1a353696897","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/acpi/scan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.14","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","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/acpi/scan.c"]}],"references":["https://git.kernel.org/stable/c/8cc2017aa804f157e717b5fd471e50fbddfec654","https://git.kernel.org/stable/c/f30379b8a4e24623594235dd5aefb2957e0cc228","https://git.kernel.org/stable/c/83ee65feadc88de681abc6e977d54eceda95abd7","https://git.kernel.org/stable/c/15512c6b5dea72fb5f1f41c1aa96f3f32531ca03","https://git.kernel.org/stable/c/0b9053cd0955c7cd66d71a8442be33926d70e197","https://git.kernel.org/stable/c/a414485ebc2aa50907d0ce97cde2b1a353696897"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90194.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90194","state":"PUBLISHED","datePublished":"2026-09-17T16:07:14.317Z","dateUpdated":"2026-10-19T08:59:30.730Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.792Z"},"containers":{"cna":{"title":"ACPI: scan: fix bus ID cleanup on device_add() failures","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: scan: fix bus ID cleanup on device_add() failures\n\nWhen device_add() fails after acpi_device_set_name() has allocated an\ninstance ID and a new acpi_device_bus_id has been linked into\nacpi_bus_id_list, the rollback path only removes wakeup_list and\ndetaches the ACPI handle data.\n\nThat leaves the bus-ID bookkeeping behind and keeps the allocated\ninstance number consumed.\n\nMove the bus-ID cleanup and wakeup-list removal into a single helper.\n\nUse it from both the normal device teardown path and the device_add()\nrollback path. The wakeup list node is initialized before registration,\nso it can be deleted without checking whether the device is wakeup-\ncapable like in the original teardown path.\n\n[ rjw: Rename acpi_device_del_list() to acpi_device_cleanup() ]\n[ rjw: Subject and changelog edits ]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"8cc2017aa804f157e717b5fd471e50fbddfec654","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"f30379b8a4e24623594235dd5aefb2957e0cc228","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"83ee65feadc88de681abc6e977d54eceda95abd7","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"15512c6b5dea72fb5f1f41c1aa96f3f32531ca03","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"0b9053cd0955c7cd66d71a8442be33926d70e197","versionType":"git"},{"version":"d783156ea38431b20af0d4f910a6f9f9054d33b9","status":"affected","lessThan":"a414485ebc2aa50907d0ce97cde2b1a353696897","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/acpi/scan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.14","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","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/acpi/scan.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8cc2017aa804f157e717b5fd471e50fbddfec654"},{"url":"https://git.kernel.org/stable/c/f30379b8a4e24623594235dd5aefb2957e0cc228"},{"url":"https://git.kernel.org/stable/c/83ee65feadc88de681abc6e977d54eceda95abd7"},{"url":"https://git.kernel.org/stable/c/15512c6b5dea72fb5f1f41c1aa96f3f32531ca03"},{"url":"https://git.kernel.org/stable/c/0b9053cd0955c7cd66d71a8442be33926d70e197"},{"url":"https://git.kernel.org/stable/c/a414485ebc2aa50907d0ce97cde2b1a353696897"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:59:30.730Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}