{"api_version":"1","generated_at":"2026-08-16T16:32:53+00:00","cve":"CVE-2026-74552","urls":{"html":"https://cve.report/CVE-2026-74552","api":"https://cve.report/api/cve/CVE-2026-74552.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74552","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74552"},"summary":{"title":"hwmon: (lm90) Only report alarms if driver is ready","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (lm90) Only report alarms if driver is ready\n\nUserspace can read sysfs attributes before driver registration is complete,\nimmediately after devm_hwmon_device_register_with_info() has been called.\nAt that time, data->hwmon_dev is not yet initialized. This can trigger\na NULL pointer access since lm90_update_device() and with it\nlm90_update_alarms_locked() will be called. This call schedules\nreport_work and lm90_report_alarms(), which passes the still-NULL\ndata->hwmon_dev to hwmon_notify_event() and triggers a NULL pointer\ndereference.\n\nFix the problem by only scheduling the report and alert workers\ndata->hwmon_dev is set.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 13:18:00","updated_at":"2026-08-15 13:18:00"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/075fce376cf852db9293481edce07c181a9b1f46","name":"https://git.kernel.org/stable/c/075fce376cf852db9293481edce07c181a9b1f46","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/aa9429edf9fc0e90d6f4da19ea4b5495a54ab117","name":"https://git.kernel.org/stable/c/aa9429edf9fc0e90d6f4da19ea4b5495a54ab117","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4eed33c7db5c0c573928d28d8a2c003642c679b8","name":"https://git.kernel.org/stable/c/4eed33c7db5c0c573928d28d8a2c003642c679b8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f0b791a006512a48b6348494cb6960598fa99a58","name":"https://git.kernel.org/stable/c/f0b791a006512a48b6348494cb6960598fa99a58","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/70d9a71aa407044d70b50d356b6decf6659c4d56","name":"https://git.kernel.org/stable/c/70d9a71aa407044d70b50d356b6decf6659c4d56","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74552","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74552","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6d0775119fb905fb02eafa98d575cf8ee792d46 4eed33c7db5c0c573928d28d8a2c003642c679b8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6d0775119fb905fb02eafa98d575cf8ee792d46 70d9a71aa407044d70b50d356b6decf6659c4d56 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6d0775119fb905fb02eafa98d575cf8ee792d46 075fce376cf852db9293481edce07c181a9b1f46 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6d0775119fb905fb02eafa98d575cf8ee792d46 f0b791a006512a48b6348494cb6960598fa99a58 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6d0775119fb905fb02eafa98d575cf8ee792d46 aa9429edf9fc0e90d6f4da19ea4b5495a54ab117 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.151 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.103 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc6 * 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/hwmon/lm90.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4eed33c7db5c0c573928d28d8a2c003642c679b8","status":"affected","version":"f6d0775119fb905fb02eafa98d575cf8ee792d46","versionType":"git"},{"lessThan":"70d9a71aa407044d70b50d356b6decf6659c4d56","status":"affected","version":"f6d0775119fb905fb02eafa98d575cf8ee792d46","versionType":"git"},{"lessThan":"075fce376cf852db9293481edce07c181a9b1f46","status":"affected","version":"f6d0775119fb905fb02eafa98d575cf8ee792d46","versionType":"git"},{"lessThan":"f0b791a006512a48b6348494cb6960598fa99a58","status":"affected","version":"f6d0775119fb905fb02eafa98d575cf8ee792d46","versionType":"git"},{"lessThan":"aa9429edf9fc0e90d6f4da19ea4b5495a54ab117","status":"affected","version":"f6d0775119fb905fb02eafa98d575cf8ee792d46","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/hwmon/lm90.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc6","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.151","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc6","versionStartIncluding":"6.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (lm90) Only report alarms if driver is ready\n\nUserspace can read sysfs attributes before driver registration is complete,\nimmediately after devm_hwmon_device_register_with_info() has been called.\nAt that time, data->hwmon_dev is not yet initialized. This can trigger\na NULL pointer access since lm90_update_device() and with it\nlm90_update_alarms_locked() will be called. This call schedules\nreport_work and lm90_report_alarms(), which passes the still-NULL\ndata->hwmon_dev to hwmon_notify_event() and triggers a NULL pointer\ndereference.\n\nFix the problem by only scheduling the report and alert workers\ndata->hwmon_dev is set."}],"providerMetadata":{"dateUpdated":"2026-08-15T12:27:58.829Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4eed33c7db5c0c573928d28d8a2c003642c679b8"},{"url":"https://git.kernel.org/stable/c/70d9a71aa407044d70b50d356b6decf6659c4d56"},{"url":"https://git.kernel.org/stable/c/075fce376cf852db9293481edce07c181a9b1f46"},{"url":"https://git.kernel.org/stable/c/f0b791a006512a48b6348494cb6960598fa99a58"},{"url":"https://git.kernel.org/stable/c/aa9429edf9fc0e90d6f4da19ea4b5495a54ab117"}],"title":"hwmon: (lm90) Only report alarms if driver is ready","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74552","datePublished":"2026-08-15T12:27:58.829Z","dateReserved":"2026-08-15T05:44:03.915Z","dateUpdated":"2026-08-15T12:27:58.829Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 13:18:00","lastModifiedDate":"2026-08-15 13:18:00","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74552","Ordinal":"1","Title":"hwmon: (lm90) Only report alarms if driver is ready","CVE":"CVE-2026-74552","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74552","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (lm90) Only report alarms if driver is ready\n\nUserspace can read sysfs attributes before driver registration is complete,\nimmediately after devm_hwmon_device_register_with_info() has been called.\nAt that time, data->hwmon_dev is not yet initialized. This can trigger\na NULL pointer access since lm90_update_device() and with it\nlm90_update_alarms_locked() will be called. This call schedules\nreport_work and lm90_report_alarms(), which passes the still-NULL\ndata->hwmon_dev to hwmon_notify_event() and triggers a NULL pointer\ndereference.\n\nFix the problem by only scheduling the report and alert workers\ndata->hwmon_dev is set.","Type":"Description","Title":"hwmon: (lm90) Only report alarms if driver is ready"}]}}}