CVE-2026-74552

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74552", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.915Z", "datePublished": "2026-08-15T12:27:58.829Z", "dateUpdated": "2026-08-19T16:38:49.811Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:38:49.811Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hwmon/lm90.c"], "versions": [{"version": "f6d0775119fb905fb02eafa98d575cf8ee792d46", "lessThan": "31ce62d36d859423dc39f9902f7c4c307b2e00e3", "status": "affected", "versionType": "git"}, {"version": "f6d0775119fb905fb02eafa98d575cf8ee792d46", "lessThan": "4eed33c7db5c0c573928d28d8a2c003642c679b8", "status": "affected", "versionType": "git"}, {"version": "f6d0775119fb905fb02eafa98d575cf8ee792d46", "lessThan": "70d9a71aa407044d70b50d356b6decf6659c4d56", "status": "affected", "versionType": "git"}, {"version": "f6d0775119fb905fb02eafa98d575cf8ee792d46", "lessThan": "075fce376cf852db9293481edce07c181a9b1f46", "status": "affected", "versionType": "git"}, {"version": "f6d0775119fb905fb02eafa98d575cf8ee792d46", "lessThan": "f0b791a006512a48b6348494cb6960598fa99a58", "status": "affected", "versionType": "git"}, {"version": "f6d0775119fb905fb02eafa98d575cf8ee792d46", "lessThan": "aa9429edf9fc0e90d6f4da19ea4b5495a54ab117", "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/hwmon/lm90.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.8", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "6.0", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.151"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/31ce62d36d859423dc39f9902f7c4c307b2e00e3"}, {"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"}}}}

{}

{"affected": [{"affectedData": [{"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": "31ce62d36d859423dc39f9902f7c4c307b2e00e3", "status": "affected", "version": "f6d0775119fb905fb02eafa98d575cf8ee792d46", "versionType": "git"}, {"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": "6.1.*", "status": "unaffected", "version": "6.1.183", "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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-74552", "lastModified": "2026-08-19T17:21:10.360", "metrics": {}, "published": "2026-08-15T13:18:00.607", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/075fce376cf852db9293481edce07c181a9b1f46"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/31ce62d36d859423dc39f9902f7c4c307b2e00e3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4eed33c7db5c0c573928d28d8a2c003642c679b8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/70d9a71aa407044d70b50d356b6decf6659c4d56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aa9429edf9fc0e90d6f4da19ea4b5495a54ab117"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f0b791a006512a48b6348494cb6960598fa99a58"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: hwmon: (lm90) Only report alarms if driver is ready", "id": "2517000", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517000"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nhwmon: (lm90) Only report alarms if driver is ready\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.\nFix the problem by only scheduling the report and alert workers\ndata->hwmon_dev is set.", "A flaw was found in the Linux kernel's hwmon (lm90) driver. A local user can trigger a null pointer dereference by reading sysfs attributes before the driver's registration is complete. This can lead to a system crash, resulting in a denial of service."], "name": "CVE-2026-74552", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74552\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74552\nhttps://lore.kernel.org/linux-cve-announce/2026081550-CVE-2026-74552-91cc@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f6d0775119fb905fb02eafa98d575cf8ee792d46,4eed33c7db5c0c573928d28d8a2c003642c679b8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f6d0775119fb905fb02eafa98d575cf8ee792d46,70d9a71aa407044d70b50d356b6decf6659c4d56)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f6d0775119fb905fb02eafa98d575cf8ee792d46,075fce376cf852db9293481edce07c181a9b1f46)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f6d0775119fb905fb02eafa98d575cf8ee792d46,f0b791a006512a48b6348494cb6960598fa99a58)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f6d0775119fb905fb02eafa98d575cf8ee792d46,aa9429edf9fc0e90d6f4da19ea4b5495a54ab117)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.151,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.103,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.44,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.8,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc6,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T15:15:03.211911+00:00", "updated": "2026-08-22T03:45:03.674314+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}